Re: tell husband how much savings you have? what your salary is?
I can’t answer this. I’m very sympathetic to your situation but bear in mind that to him it looks like you don’t trust him and that you have divorce in your mind (since it looks clear that you’re trying to keep what you have hidden from him). This makes it easier for him to make divorce threats himself.
On the other hand, my gut feel from your story is that once he finds out, he will try to make financial “suggestions” at best and demands at worst. Which may well make things even worse.