My four month old does the same thing, especially when it’s time to go to sleep. I’m not sure what it is but I’m right there with you girl
Sleep regression and beginning of teething! Mine rubs his eyes /mouth uncontrollably and wakes himself up like crazy. Total self soothing that’s interrupting his soothing haha
My babygirl hits her tummy over and over it’s gotta be self soothing because I can’t explain it either
Self soothe*