My LO is currently doing the same.
July 29 2019
You didn’t mention whether or not you’re breastfeeding, but this is pretty typical behaviour for a breastfed baby. The one thing I would try is to wake her more often during the day for feedings. Unswaddle, undress her and do whatever it takes to wake her up. Try to cram in a few more feedings during the day, especially in the evening. Make sure she stays on the first breast until she decides to unlatch so she’s getting the fatty hindmilk (it will keep her full longer). Good luck!!