4 month sleep regression? Help!

Kel

So my baby will be 4 months next week and his sleeping has been all over the place!!! He recently started rolling over and we have been trying to transition him from a swaddle but it has been horrible! He does. He kept waking up every couple of hours so I just swaddled around 3 am so we could all sleep. He usually is fine once he is swaddled but last night was a different story! He kept waking up every 30 minutes to an hour and wanted me to pick him up. Eventually I just laid him next to me in the bed for a few minutes and he immediately fell asleep. But when I attempted to put him back in his bassinet, he immediately woke up! I’m exhausted. I’m not sure how we went from sleeping 7 hour stretches to waking up multiple times throughout the night.