My 11 week old is starting to sleep longer at night (6-8 hours). However she’s not drinking more formula during the day. She drinks anywhere from 40-100 mL, every 2-3 hrs but the daily total is usually 600 ml or a bit less. Based on at least 150 ml/kg she should be taking almost 700 mL per day so I’m worried she’s not drinking enough. So far she is following the 10th centile curve and our HV is not concerned although she was only sleeping 4-5 hours at a time last time she was weighed. Would you wake her more frequently during the night for feeds or just leave her to sleep?