My Chloe is 5 weeks and doing similar to your Chloe, although she does have a bit of reflux. I am trying to give her a play before feed and then keep her upright for 30mins after feed to avoid the reflux, but this week she squeals and crys when I try and put her in the bouncer. The last two days (including right now) she is getting a good day sleep in the baby bjorn, but other than that she is a daytime grizzler every time I put her in her bed and will only sleep about 10mins unless I pick her up and she sleeps on me. I don't know if its a "phase" or due to the reflux....probably a bit of both .