Is it a growth spurt?


If you have an average-size baby, you can expect her to double her birth weight by five months of age, triple it by one year, and quadruple it by two years.

  • The average gain in length or height is 25 cm in the first year.
  • These average estimates could be different if your baby was premature, is naturally small or has been ill.
  • Common times for growth spurts are during the first few days at home and around 7-10 days, 2-3 weeks, 4-6 weeks, 3 months, 4 months, 6 months and 9 months (more or less). It will vary with every baby.
  • Growth spurts usually last 2-3 days, but sometimes last a week or so.

What is the best way to handle a growth spurt?

  • Follow your child's lead. A baby will automatically get more milk by nursing more frequently, and your milk supply will increase due to the increased nursing.
  • It is not necessary (or advised) to supplement your baby with formula or expressed milk during a growth spurt. Supplementing or sticking to a fixed schedule of feeds interferes with the natural supply and demand of milk production, and will prevent your body from getting the message to make more milk.
  • Some nursing moms feel more hungry or thirsty when baby is going through a growth spurt. Listen to your body -- you may need to eat or drink more during the time that baby is nursing more often.
  • Your baby will probably sleep more during the growth spurt, and you should also, as the extra milk production can be tiring.

Have you been surprised by how quickly your baby has grown? Share your funny, shocking or interesting story with us by emailing to and we could publish your letter. 

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