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Month 20: Jumping and Sentences!

20 months: Jumping, two-word sentences, and the little helper

🌱Jumping, two-word sentences, and eagerness to help
3 min read

Jumping and Sentences!

Your 20-month-old is starting to jump with both feet, puts two words together into mini sentences, and above all wants to help with everything you do.

Development

  • Jumps with both feet off the ground — a big motor milestone
  • Two-word sentences become common: "Dada car", "More milk", "Big dog"
  • Wants to help with household tasks — sweeping, wiping, tidying, loading the washing machine
  • Draws scribbles with a crayon and is proud of the result
  • Kicks a ball with reasonably good aim
  • Follows simple two-step instructions: "Fetch the shoe and come here"
  • Names body parts: Nose, eyes, mouth, tummy, hands

Growth

  • Boys: Average 11.4 kg / 84 cm (25.1 lb / 33.1 in)
  • Girls: Average 10.8 kg / 82.5 cm (23.8 lb / 32.5 in)

Sleep

  • 11–14 hours per day (nighttime sleep 10–12 hours + 1 nap)
  • Midday nap is typically 1–2 hours, often after lunch
  • Some babies try to drop the midday nap, but most need it until they are 2.5–3 years old
  • Bedtime routines with a book, song, and cuddle provide predictability

Feeding

  • 3 meals + 2 snacks — family food
  • Getting better with the spoon and can start trying a fork
  • Let your baby "help" with cooking — stir in a bowl, put vegetables in a pot
  • Food your baby has helped prepare is often eaten with more enthusiasm
  • Whole milk to drink (max 500 ml / 17 oz dairy products per day)
  • Vitamin D: Continue with 400 IU (10 mcg) daily

Good to Know

  • Eagerness to help is gold: Let your baby help even if it takes longer. It builds confidence and a sense of responsibility
  • Two-word sentences are a milestone — your baby is combining words into meaningful communication
  • Transitional object: Many babies have a favorite stuffed animal or blanket that provides comfort. This is completely normal and healthy
  • Defiance and frustration: Your baby knows what they want but lacks the words. This can lead to big outbursts

Activity Tip

Let your baby help out! Give them a cloth to wipe with, let them put clothes in the washing machine, or sort cutlery. It builds fine motor skills, confidence, and a sense of belonging in the family.

Explore on Babysential


Tip: When your baby says "Dada car", expand the sentence: "Yes, that's Daddy's car! It's red." This is how your baby learns new words in a natural context.

Sources & Disclaimer: This content is based on guidelines from WHO, AAP, and NHS. Every baby develops at their own pace. Consult your pediatrician for personalized guidance.