Infant growth spurts occur at which times?

• A. 2 weeks, 4 weeks, 2 months
• B. 3 weeks, 6 weeks, 3 months
• C. 1 week, 8 weeks, 4 months
• D. 5 weeks, 7 weeks, 9 weeks

Answer: (B)

Infant growth spurts are times when a baby’s growth accelerates and they seem hungrier than usual. During these brief periods, the baby often feeds more frequently, may cluster feed, and can be more fussy. This pattern helps the baby receive more calories for rapid growth and signals the breastfeeding system to ramp up milk production to meet the higher demand.

The most commonly cited times for these spurts are around three weeks, six weeks, and about three months. These windows line up with early, rapid stages of infancy when growth and developmental changes are happening quickly, so appetite and feeding behavior shift accordingly. It’s important to remember that exact timing can vary from baby to baby—some may show spurts a few days earlier or later—but the three-week, six-week, and three-month pattern is a widely taught reference point.

Other time frames can happen for some babies, but they aren’t the standard pattern most educators emphasize, which is why the three-week, six-week, and three-month timing is the best answer.