Timing is everything. Don’t breastfeed your baby as you’re drinking or right after drinking. “If a mom is going to drink alcohol, she should wait at least three to four hours until breastfeeding the baby,” Dr. Herway says.(The American Academy of Pediatrics says to wait a minimum of two hours .).The amount of alcohol in breast milk is very similar to the amount in the woman’s blood and alcohol is a fast-acting drug,” explains Conover. “It peaks pretty fast after you drink.