Baby is a restless sleeper

My son is 7 months old and EBF. He is taking 2-3 naps during the day and started falling asleep in his crib at night. He is sleeping from 8-10 pm to 7-9am. However since we started gentle sleep training and he is falling asleep on his own (it takes 10-20 minutes and he needs me to stay with him and sometimes pat his back or something) he is extremely restless the whole night. I literally have to wake up every single hour to check on him (he sleeps in our room). He is asleep but trashing around, waving his arms and if I don't hold him in one place for a few seconds until he calms down he wakes up completely. Any ideas how can I help him to sleep better? He gets enough sleep but I'm burning out from only sleeping 40-50 minutes in once for weeks now... He is sleeping with a pacifier that he can take out and put back on his own, so it's not that. Lately he doesn't want it back when I wake up...