I’m a couple of years older than your husband, Angie, and we’re of an age where we’re brought up to be the “provider”, no tears, be a man. Never open up.
It takes quite a lot to go against that kind of programming, and your husband is likely struggling to come to terms with the effects of the amputations. While the physical part of the amputation is bad enough, the emotional effects are the worst. He can still feel the amputated parts - phantom pains are extremely common. But he can’t use them, of course. And that means his role has changed - but his programming can’t accept it. It’s quite likely, going by what you’ve said, that he’s a lot less physically demonstrative than he was before the amputations. He may well feel less of a man. But, of course, we’re not brought up to talk about this sort of thing, and so he’s withdrawing into his shell. He doesn’t want others to see him like that so no going out. No contact with friends. Especially if they worked with him (I’m guessing here but in a physically demanding role, such as construction?).
Does he do anything at all in the house, like making drinks and snacks, or cooking?
You may need to use a little tough love and point out that he still has a brain and his hands: he can still do things like veg prep, etc. At the very least. Tell him how tired you are and that you need his help. Get him to think about what he CAN do, not about what he cannot. Start with small steps and build up from there.
My wife uses a wheelchair, although she can walk a little. She had a spinal cord injury a little over 8 years ago. She can cook - on good days when she’s not exhausted - and although I do most of the cooking, I encourage her to make the Yorkshire Pudding, for example - hers is far better than mine. If I’m cooking something I’m unfamiliar with, I always talk it through with her, to involve her and to use her skills. On a good day, she’ll cook in the kitchen and I act as her sous chef, reach down the equipment she can’t, and generally do as I’m told. Which is something I’ve never been good at, but that’s a different story!
This won’t be easy. He’s developed a two year habit. It’s going to be really hard. But if you can get him to realise that life hasn’t stopped, then hopefully it will get easier.