Advice please new to this

I believe my significant other has sz but I can’t get him to go to the dr because “ he does not have any problems and does not need help” he has a family history of family hearing seeing or believing thing that are untrue. When we got together there was a lot of drug use and I attributed the problems to that . He got clean and we moved 1200 miles away.After a little while down here I start hearing things that sound paranoid he had a problem when I started a new job and had himself convinced I must be cheating on him with the chef even going so far as to text the chef and confront him at the restaurant.( the chef is an older married man ) there was no real basis to believe this. He now works with me at the restaurant and know that belief was incorrect. I should also add that he was married for 23 years before me and that ended with her cheating on him and becoming pregnant. Everything will go good for a bit then he starts saying thing about how people are doing things against him like people are giving him extra dishes at work just to make his day hard. That people are moving or taking things out of the house. While he is asleep I’m using that time to plot against him with people from his past that I don’t know but know of. If I’m upset or crying I’m putting on a show for these people . If I’m doing anything and he does not understand it’s because I’m doing what these people are telling me to do to play a game on him ( like I’m up doing the dishes instead of laying with him on the couch at a time he does not believe I usually do things) does this sound like sz I have never dealt with anything like this and the only knowledge I have is what I have read he has a doctors appt at the end of April because I have told him I’m moving on if he does not talk to someone and get some help as I said everything goes good for a while then this happens for days at a time he thinks he’s going to go in and convince the doctors to give me a lie detector test and if I pass it he will admit he has a problem and get help I know this is not how things work doctors are not going to administer me a test to let him know his beliefs are wrong I would take this test so he would get help but they are very expensive and when I agree it becomes no he doesn’t want me to do this he knows I’m a good girl or that he knows I’m in cahoots with whoever he finds to do the test so they will say I pass even when I’m doing these things to trick him he has even went as far as saying my children are involved in all the tricks I’m playing and are being instructed to play along when he is in a health state of mind he’s an amazing man and he’s a great father I do love him very much I’m just tired of waiting for the next time one of these episodes happen they are very painful and disrupting to everyone around us most of all me I have also bought new phone after new phone and he continues to believe they are hacked and he’s being monitored to catch him doing or saying something I would not like so they can inform me again I don’t know how to deal with any of this and I need advice on my situation thank you so much