How many weeks PP is it safe to start drinking lactation teas? I can't tell if my supply is low or not. This is my second baby. My breasts arent super full like I was with my first. With my first I had an over supply. Rock hard breasts for months. So by not having super full breasts this time around is making me nervous I will have a issue later down the road. LO will be 4 weeks tomorrow. TIA