Ok, I've read through and I just can't shake that he's not in discomfort. And I'm sure you know me by now I think everything is related to food
Have you watched his behaviour when he's sleeping? Is he still? More importantly if he's still, is he squirming before he wakes as if he's in discomfort? This was a dead giveaway with E. Have you looked for apnea? I know with OT it is a bit hard to tell a lot from sleep behaviours because I think they're more prone to jolt awake.
E didn't sttn (and by that I mean a six or seven hour stretch) until 14 months. She did nap though so at least I had that. What we didn't know then that we do now was that through all of my strict ED and not so strict ED we were missing the wheat. I know that's what was going on because the constant wheeze quit and the sleep started. At 23 months we have had I think 6 sttn's from 7pm-7am. So I get it.
We used to joke that E was Gizmo from the Gremlins movie way back in the 80's. If I bf'd her anytime after midnight, she was up all night. And I mean ALL NIGHT LONG, every hour and she just wouldn't lie down. And when she would finally lie down it had to be on me. I could never shake the feeling that something was up. Once I weaned the NF's, her nights got drastically better and down to only one NW on a good night.
I think and I'm sure you know you're in a massive OT loop too
I'm surprised the APOP'ing in the sling didn't work for you, but not so much the car. My girls have always been hit or miss when they're uncomfortable in the van. With E, there were a lot of trips to the park where she passed out in the Ergo and the girls had a two hour session playing there. I gave up trying to lie her down after a while because she caught up on so much being upright.
Gotta love when Dr's and Paed's say that some kids just don't like sleep. I would understand that a bit more if the child was a bit more cheery. I don't think this is the case here. But it's so hard to find
Lots of hugs to you. I understand your frustration.
