My 7 week old wakes to feed during the night typically one time (5-6 hour stretch) but is difficult to get back to sleep and when she does fall asleep difficult to transfer her to crib without her waking right away or shortly after. During the day she eats every 3-4 hours. She will only nap in my arms during the day and wakes up when the is out down. If I put her in the ergo and keep moving she will sleep 3 hours in it. I don't usually do they until the afternoon nap (nap #3) though when I'm outside playing w my 4 yr old. Any idea what is causing her to be difficult to put down after night feeding? Thanks.