my 14 week LO has been feeding the same amount or slightly more for the past 2 months. should i be concerned? She is gaining weight but about a pound in the last month. She is happy and alert, but doesn't seem hungry. She used to feed 4 oz every 4 hours, but in the last 3 weeks, i saw her finish 4-5 oz, only to return to 3.5 to 4 oz every 4 hours again. Her range is now 20-23 total oz per day. I have already let her sleep through the night(and skip one feeding), but i don't want to keep waking her up for the other 5 feedings. Is she getting enough nutrients.