I think both Geoff and sbella02 are on the money. I especially agree with sbella02's comment that relationships should not be a burden, obligation or a struggle. Relationships are about being a partnership and having each other's back. And it very much sounds like the is a lot of you having his back, and very little of him having yours.
Relationships can go through difficult times, but ultimately, the love and respect you have for one another should motivate a partner to wear a bit more weight when the other is struggling. And you've clearly told him that you are struggling with your mental health, as well as being the bread winner. And if he isn't responding to that, I think you have every right to question if this is the future you want for your life.
At the end of the day, partnerships are 50:50. And you are responsible for the 50% you bring to the relationship, and he is responsible for his. And if his 50% if more like a big fat 0%, then I you have every reason to question his love and respect for you. I myself have walked away from relationships when I realise that there is a fundamental difference in what you both want in a relationship. And that's ok - it just means he is not your person. Yes, it hurts, but it's better to go through the break up, rather than spending the rest of your life trying to make someone happy, who won't afford you the same thing. ESPECIALLY when you have made it abundantly clear that it is having an impact on your mental health.
A year into my relationship, my partner was made redundant, and was unemployed for 7 months. During that time, we sat down, did a budget, cut down on spending etc. Then earlier this year (after four years together), my mental health deteriorated so much that I ended up in hospital for a month. I ultimately had to leave my job, but it was a decision we made together, because it was in the best interest to my health. I'm still not working, but we have put a budget in place to get through this until I get better. I'm saying this so you have a demonstration of what I think should be expected in a relationship.
Please know your own worth. You need to take care of you and put you first. I think you know in your heart what the answer is, just even reading your post..."he forgot you had depression"?
We are all here if you want to talk more. Sending you big hugs.