I think I need to sleep train 😢

I’ve been so against sleep training from the beginning. I feel like there’s no way I can listen to my baby cry and not pick him up. We’ve been cosleeping for a couple months now and it’s not helping anymore. Last night we were up from 3am-4:30am. I am so exhausted and have to work all day. I don’t know what to do anymore. Anyone have any encouraging words about sleep training? 🙁