Financial Matters and Frustration

Married for 42 years to spouse who does not think he has ADHD despite all signs of same. Over the past 3 years, I have considered leaving, but I actually do love him so have tried to figure out a way to make things work. I now realize his business (self employed) has not been profitable for past 5 years, and am concerned he will be using our retirement funds to continue to support his business in future (he made other funds available to his business in 2023 to do so). He is supposed to have a "business plan" to discuss with me on July 10, but I have no confidence it will be anything but him telling me this is the way it is when you own your own business, and he has no choice but to continue as usual.

How do I determine if I am being unfair to want a stable retirement income (I am still working), but still be supportive to spouse? I am going back to therapist this week. She has told me before that I must ensure my own financial safety, but how to do it when spouse sees no problem in spending to meet what he feels is appropriate without a word to partner? We have previously had mutual agreements, but those go by the wayside when he wants something, or he forgets to inform me.

I have funds set aside to ensure my own retirement, but if he spends all "his" money, I am unable to pay for him too.  I feel stuck and very anxious.