How do deal with a partner with anxiety

Okay. My fiancé is a nurse and has been for years. He is amazing. Very smart. He is very organized when it came to school and work. He takes his job beyond serious which is awesome.

He comes from a childhood of trauma and physical and emotional abuse, like bad….. I’ve always tried to be patient and very supportive and loving. This is where the bad anxiety and depression stems from, which plays a HUGE part in how he is today.. so the hospital we both work at is crap. Understaffed and barely pays anything. It’s horrible. So we sat down and talked and I told him look into travel nursing! We have 3 kids, we came up with a game plan that he wanted to do that, make good money and I could put in a day or two ( if that ) at work myself. I’m PRN, and ID stay home with the kids like a stay at home mom I guess. Which at first I wasn’t on board because money is rough, but I decided it would be best. So the past two months have been hell. My 2 year old got RSV, the flu and a bad sinus infection, my older two got RSV also. The baby got it all from daycare. That’s done a big toll on us lately because both of us have had to miss a lot of work so I’m sure that has stemmed up to what it is now, but this travel nursing job is literally making me sick. He will wake me up stressing about it ( when he knows I’m exhausted and has had no rest ) he will be up at 2,3 or even 4 am talking and stressing about it CONSTANTLY. He’ll see I’m completely overwhelmed with the kids and try talking about it when I’m in the middle of doing a million things! It feels so forceful in a way he’s talking about it like overpowering with what I’m doing. At first I was SO supportive. I tried to control my stress but now it’s getting too much. It’s to the point we went out as a family today to go Halloween shopping for the kids and it was a great time till I noticed he was quiet his whole mood was tense and wasn’t involved with all of us. I asked why he was acting that way and all he says is the job the job the job. We can’t go anywhere do anything cause that’s what he’s thinking of 24.7 and talking about asking a million questions constantly.

He starts tomorrow for orientation then will do his first shift Wednesday. He’s amazing nurse and he knows his shit. I’ve told him a million times he’s gonna do great! Try to enjoy this time before it gets busy and just relax! He’s on anxiety meds but i don’t notice any change. I guess I literally don’t know how to handle this anymore. I’m beyond overwhelmed and stressed with my own job, and dealing with three kids. My 6 year old broke his wrist at school so I’m dealing with that now and I literally can’t take it anymore! I feel forced to deal with his stress on top of mine and I feel like exploding. Any advice? I’m trying so hard but I can only take so much and this has been ongoing for now two and a half months. It doesn’t doing terrible but it’s taking a toll on our relationship, his relationship with the kids and just overall everyday things