If the milk flow is good will 10 mins of feed is enough for a 4 weeks old baby?; My baby girl takes off her mouth after 10 or 15 mins. Milk flow is good because I leak of milk often, most of the time she takes extra milk and spits, after feeding I also check if milk is there or not,; she sleeps well .. is this correct or is there any other way to find milk flow is good or not?