What is the best way to handle a growth spurt?
Follow your child's lead. 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 (and/or scheduling feeds) interferes with the natural supply and demand of milk production
and will prevent your body from getting the message to make more milk during the growth spurt.