can anyone please help me.

Caley
We started co sleeping about two-three months ago. I absolutely love it, but I know it's going to make it so hard on him transitioning him into his own bed at some point and I don't really care for him to still be sleeping with me til he's 4. Does anyone have a good recommendation on how they put their babies to sleep without a lot of crying?? I don't think the controlled crying/ crying out method will work for us😭 as he cried for an hour tonight and still wasn't asleep. ( kept going in to calm him every 3-5 mins)