Hi and welcome! If I ever get officially diagnosed I bet I'd be about the same as you. Sounds very familiar.

I have weighted blankets for both my boys. It helped my older son to calm down at bedtime enough to be able to fall asleep. I also did joint compressions on him when he was really agitated. We were able to cut down his falling asleep time from ~3 hours to 20ish minutes over time. He doesn't use it as much lately. My younger son loved big brother's so much that I bought one for him too. He used to be a great sleeper but starting in Kindergarten he started taking longer and longer to fall asleep. I was also seeing more and more signs of him being a seeker. He still loves his weight blanket. I also give him 2 mg of melatonin. I've borrowed their blankets for 20-30 minutes at a time and love it. I also love wearing the lead vest for x-rays at the dentist! I find the weight very comforting and calming.