what do you do if your newborn only feeds on one side for 10-15 minutes?

Laura
Do you try your best to arouse for other side? Let him sleep? Change his or her diaper? Any other alerting ideas? Mine will frequently feed for less than 15, is not woken up and then wakes up withinn an hour later to feed againMaking it very hard- for mom to get sleep! Advice and suggestions please!