8 weeks

My son is 8 weeks. For the last week he has slept in his swing at night. Hebert time I lay him on his back, he wakes up and starts crying. So the swing (I know it’s not recommended) is the only thing he will sleep in with no issues. Any other mommas let their LOs sleep in the swing at night?? I’ve tried the sleep sack in his bassinet and he hates that too. I want to transition him to his crib. How do I do that?!