Puppy won’t sleep outside his crate

Heyyy, I have almost 5 months old border collie puppy. He's crate trained, goes there on command, sleeps instantly (and if we're not home, he sleeps there too – he has the door open, and we have camera so we see he sleeps there). The issue is, he won't sleep when we're home outside his crate. Like, at all. We had to do enforced naps in the crate, since he wouldn't sleep on his own at all, but he's getting older and I don't want to keep him in the crate forever. 🙃 But if he's out of his crate, he's just always trying to find something to do. It's not that he's bored, we go to trainings (obedience), walks, socialising, lots of sniffs and toys and have scheduled herding training. He has plenty of work. But I'm trying to transfer the sleeping in crate to outside of the crate and we're failing. I feel like he wouldn't sleep at all, if we didn't have the crate. I try to give him praise and treats for laying down on his own, but it's never sleep and he never truly relaxes, he just does it as a command, if you understand. Anyone has any tips on this topic? Thank you!