I dread nighttime

Baby is almost 5 mos. sleep regression hit at 3.5mos and it’s been utter hell. Starting to get better, she’s sleeping at night but is very very fitful and keeps me up all night trying to keep her asleep. We had to move her back into the pack n play next to my side of the bed. She was sleeping well in her crib in her nursery. Now I sleep with one arm in the pnp holding her hands most of the night so she’ll stay sleeping. Then I have to feed her at 3am and 5am. Sometimes I can put her back in the pnp successfully, but sometimes I have to put her on my chest while I half sleep. It’s awful. Naps were down to 20-40 mins for a while but are closer to 1-1.5 hrs this week, but nights are just painful. I get anxiety every night about how I’m only going to get 3-4 hrs of sleep. Husband gets to sleep for 7+ hrs while I’m trapped with an arm hurting and little to no sleep, which makes me resentful.

Please tell me- when did it get better for your LO?