Newest sleep regression help

Ashley

My June 25 baby was a great sleeper. Sleeping 12 hours with 0 to 1 wake ups at night since 14 weeks. He puts himself to sleep for naps and night sleep and if he wakes he just wants a quick breastfed snack and is back down in less than ten.

As of the last three weeks, he is waking, moaning, 3+ times each night, and needing excessive bouncing/patting of the bum to get back to sleep. He is moaning the whole time. He seems like he is in pain. I’ve tried Motrin but I don’t really think it’s helping.

Any mommas who have made it to the other side or experienced with older siblings? How do we get through this? Is it teeth or a phase or does this require sleep training g?