I really feel for you Peroxideblader
It's awful when the OH doesn't / won't understand 😞😞
Mine pays lip service, but when it all comes down to it - he gets boiling mad if I so much ask home to finish a chore that he's supposed to have finished...! As I've said before, the mirtazapine (tiny dose) helps me, but just lately I've had to increase the dose to 15mg as although it helps me get to sleep, I've been waking by around 2am, again. So frustrating 😐😐😐. Mine wouldn't dare call me lazy, etc as he would take sitting in front of telly / playing xbox, over doing anything at all!! Which is a whole other story in itself. His snoring is so shocking (apnoea) that I've had to move into the spare room....he's not happy, but as he won't do anything about the apnoea (in fact gets really angry when I mention it!) it's down to him really. Like yours, he's opinionated, and like you, I've let many things slide I've the last four years we've been together.
But no more - I've started asking him for things - chores done, help with dinner, my daughter, the gardens etc, and as I'm expecting him to explode I ready myself for it, speak quietly in return, and walk away. Happened yesterday, three times. As much as I wanted to, I didn't react, the jobs got done. He expected lots of praise, but I gave none, saying instead that it was nice to have those things out of the way now. He rang his mother to big note himself, especially about the garden, and she just commented that ‘yes, the outside of the house is very imprtant to always keep looking nice' ...and yes, I had a quiet chuckle to myself. He was much mollified by evening. This is just a small example of what I've chosen for myself, very similar to my first marriage, and frankly, like you, I'm done. I have my own crap to deal with without the ‘third child'.
However, this is about you and your lack of sleep. Have you had a ‘sleep study' done, or been to see a sleep specialist? There is so much that can be done in this field. If you do have the dsp disorder, they will diagnose it properly for you, and they will sit your OH down and explain, in black and white, how it is. That should stop him from calling you ‘hypochondriac', especially if it comes from a male specialist as your man sound slightly misogynist. I believe a lot of his issues stem from his mother always ‘being ill', so perhaps some relationship counselling might help you both. And maybe have a male counsellor for that too. Some men won't take any info from a woman - mines like that, and yours may well be too xx
And as for previous partners ‘sailing thru' meno...don't make me laugh - why isn't he still with them then? More likely, they were lovely women like yourself who bottled it all up, and when it became too much, ended things. Marriage is ‘for better or worse' and all things need to be shared. The underpinning thing with any marriage is trust. Your trust in him to feel safe and supported has been seriously undermined by his own egotistical behaviour and this is actually making things worse for you. If he won't go to relationship counselling, maybe you could see a relationship counsellor in your own - it really will help you to sort out your true feelings about it all.
I don't have anything to offer you re your sleep, but please look after you - try and stay calm in the face of his unjustified anger (very hard, I know)
Good luck with it all xx