You are no longer a couple. But you are still parents together — and you always will be. Good co-parenting is the most important protective factor for children after a separation.

Research shows that it is not the separation itself that harms children most, but the level of conflict between the parents. Children who see that their mom and dad cooperate do just as well as children in intact families.

Here you will find concrete tools and strategies for building a co-parenting relationship that works — for your child.

Creating a Parenting Agreement

Many resources are available to help separated parents create a written co-parenting agreement. A structured parenting plan is the foundation of a functioning co-parenting relationship.

In a parenting agreement, you settle matters such as:

Parental responsibility — joint or with one parent
Primary residence — with one parent or shared
Visitation and time-sharing — weekdays, vacations, holidays, and special occasions
Legal address for the child
Review schedule for the agreement

You can share the agreement digitally with each other and sign electronically. A parenting agreement is a private legal document, but can be used as documentation in interactions with social services, schools, and healthcare providers.

Family mediation services use the parenting agreement as a starting point in mediation. If you have filled it out in advance, you get more out of the mediation sessions.

The BIFF Method: Communication That Works

The BIFF method was developed by Bill Eddy at the High Conflict Institute and is one of the most effective tools for communication between parents after a separation. It stands for:

Brief

Keep messages short and to the point. Long explanations, defensiveness, and pent-up frustration invite conflict. Write what is necessary — nothing more.

Informative

Stick to facts. Share relevant information about the child without opinions, accusations, or emotional outbursts. "Emma has a doctor's appointment Tuesday at 2:00 PM" is better than "Since you never remember the appointments..."

Friendly

You don't need to be best friends. A neutral, polite tone is enough. Start with "Hi" and end with "Have a good weekend." It noticeably lowers the conflict level.

Firm

Be clear about what you need a response to. Ask yes-or-no questions when possible. End the conversation when you've said what you need to, without being drawn into arguments.

Reminder: Think about your messages as if they could be read by a judge, a mediator, or your child in 15 years. Write accordingly. BIFF helps you keep communication professional and child-focused.

Practical Tools for Co-Parenting

Good structure reduces conflict. Here are tools that make everyday life easier:

Shared Digital Calendar

Use Google Calendar, Apple Calendar, or another shared calendar to keep track of the child's activities, medical appointments, and events. Both parents can add entries and see everything.

Communication Platforms

Consider a dedicated communication channel just for co-parenting. Apps like OurFamilyWizard or TalkingParents log all communication. Alternatively, use email rather than text — it gives you more time to think before responding.

Handover Routines

Establish fixed routines for transitions between homes:

Fixed time and location
A short packing list that travels with the child
A brief info note with the most important updates (sleep, meals, any events)

A simple handover sheet with sleep, meals, and mood can prevent many misunderstandings. Consider using Babysential's sleep tracker to share sleep data between households.

Setting Boundaries in Communication

Co-parenting is not friendship. It is a professional collaboration with one shared goal: the child's best interests. Treat it like a working relationship.

Good Boundaries to Set

Talk only about the child. The relationship is over. Don't discuss why it fell apart, who is to blame, or new partners.
Agree on communication channels. Decide whether you will use email, text, or an app. Avoid calling unless it is urgent.
Set response times. Agree that messages are answered within 24 hours, except in urgent situations.
Never use the child as a messenger. Never say "tell dad that..." or "ask mom about...". Communicate directly.

Things to Avoid

Criticizing the other parent in front of the child
Interrogating the child after visits
Competing to be "the better parent"
Using money or gifts as a means of control

Read more about how children experience and process emotions — understanding your child's emotional needs will help you co-parent more effectively.

When It's Difficult: Managing Conflict

Even with good intentions, disagreements will arise. That's normal. What matters is how you handle them.

Take a Pause

When you notice frustration building, wait before responding. Write a draft if you like, but don't send it right away. Re-read it after a few hours.

Separate the Issue From the Person

You can disagree with the other parent's choices without attacking them as a person. "I think the child should go to bed at 7:00 PM on weekdays" is better than "You always let the child stay up way too late."

Choose Your Battles

Not everything is worth arguing about. Ask yourself: Is this important for the child, or am I just trying to be right? Different homes can have different rules without harming the child.

Use Family Mediation Services

If you can't move forward on your own, contact a family mediation service. They offer much more than the obligatory single mediation session.

Family Mediation: Free Professional Help

Family mediation services are a valuable, often free resource that many parents don't fully know about. In most jurisdictions, you don't need a referral, and the service is free or low-cost.

What Family Mediation Offers

Required mediation — in many jurisdictions, parents with shared children must attend at least one mediation session before going to court
Co-parenting courses — for parents who want to improve cooperation after a separation
Individual sessions — counseling and therapy for you as a parent
Support in high-conflict situations — specialized assistance when conflict is entrenched

Family mediation services are confidential. You can call for an initial conversation without committing to anything. Check your local family services, court system, or social services to find a mediation provider near you.

The Child's Best Interests in Practice

"The child's best interests" is more than a legal concept. It's about concrete choices in daily life.

Predictability

Children need to know what's happening. Use a simple calendar the child can understand (with colors or pictures) to show when they are with mom and when they are with dad. For the youngest children, consistent routines in both homes matter more than anything else.

Transition Moments

The transition between homes is often the hardest for the child. Keep goodbyes and reunions calm and positive. Never say "poor you, having to leave" or "finally, you're home again."

Speak Positively

Your child loves both parents. When you speak negatively about the other parent, the child experiences part of themselves being criticized. Try to say "daddy/mommy is looking forward to seeing you" — even if it takes effort.

Adapt by Age

Infants need frequent contact with both parents, but shorter periods. Toddlers need predictability and clear routines. Read more about visitation and shared custody adapted to the child's age.

When Cooperation Is Not Possible

Sometimes the conflict level is so high that direct cooperation does more harm than good. In that case, parallel parenting may be the solution.

What Is Parallel Parenting?

Parallel parenting means minimizing direct contact and running each home independently of the other. Communication is limited to the absolute minimum, preferably in writing.

Characteristics of Parallel Parenting

Communication only via email or app
No discussion of rules in the other household
Child handovers happen via a neutral location (daycare, school, a third party)
Fixed, detailed agreements that require minimal ongoing communication

Parallel parenting is not ideal, but it is better than constant conflict. If you are experiencing threats, control, or violence, contact a family mediation service or law enforcement. Your child's safety always comes before any ideal of cooperation.

Cases Involving Domestic Violence or Abuse

When there is domestic violence, substance abuse, or abuse of any kind, different rules apply. Mediation services can offer separate sessions where parents meet at different times. In serious cases, a court may order supervised visitation.

Frequently Asked Questions

Is mediation required after a separation?

In many jurisdictions, yes — parents with shared children must attend at least one mediation session before bringing a custody dispute to court. Check the laws in your state or country for specifics. A mediation certificate is typically required to file for separation or take the matter to court.

What do I do if the other parent refuses to cooperate?

Start by documenting communication in writing. Contact a family mediation service for guidance — they have experience with entrenched situations. Consider parallel parenting as an alternative. As a last resort, the matter can be brought before a court after required mediation has been completed.

Can we change the parenting agreement?

Yes, and it is recommended. A child of six months has completely different needs than a child of three years. Review and update the agreement as your child grows and their needs change.

Should the child have the same rules in both homes?

Some shared core rules are beneficial (bedtime, screen time, diet), but it is completely normal for homes to be somewhat different. Children are surprisingly good at adapting to different routines, as long as those routines are predictable. Don't require the other parent to do everything exactly as you do.

How old should the child be before overnight stays with the other parent?

There is no fixed age. It depends on the child's attachment, temperament, and sense of security. Pediatricians and family counselors generally recommend that infants have frequent contact with both parents, but that overnights are assessed individually. Talk to your pediatrician or a family counselor for advice tailored to your situation.

Summary

Good co-parenting doesn't happen on its own. It requires effort, patience, and willingness to put your child's needs above your own feelings. But it is worth it — for your child.

Start with the concrete:

Create a written agreement with the help of a mediator or attorney
Use the BIFF method in all communication
Set up practical tools like a shared calendar and fixed handover routines
Use family mediation services — they are professional and often free
Evaluate regularly — your child's needs change with age

You don't need perfect cooperation. A good-enough co-parenting relationship where your child doesn't have to stand in the middle of the conflict is the most important thing you can give them.

Sources

Eddy, Bill. "BIFF: Quick Responses to High-Conflict People." High Conflict Institute.
American Psychological Association. "Children and Divorce." apa.org
Child Welfare Information Gateway. "Co-parenting after separation." childwelfare.gov
Kelly, Joan B. "Developing Beneficial Parenting Plan Models for Children Following Separation and Divorce." Journal of the American Academy of Matrimonial Lawyers.