4w wont sleep in bassenett

Our baby is 4 weeks and 3-4 days ago stopped sleeping long periods in her bassenett ( in our room). We were getting 3-4 hrs at a time. Now we feed her and she might sleep an hour but then is whinning and eventually crying. I put my hand in to rub her but am trying not to fully take her out. I have also noticed she sometimes has seriously wet diapers and are frequent so that may be it too. Any thoughts on how to get her to sleep longer so my husband and I arent zombies?