I know this isn't what you want to hear, but honestly, not even trying with your pronouns is a huge red flag that he doesn't really respect you or your needs. You deserve better, and you need to know that you deserve better.
Beyond that, there is a very real possibility that he may actually not be attracted people with a masculine gender presentation, and did find you more attractive before you came out. And that's not his fault. We can't willingly change our sexuality, any more than we can choose not to be trans. It's important to face and deal with that possibility, not hide from it.
You really need to sit down with him and have a mature and open discussion with him about these things. The longer you put it off, the harder it's going to be.
Fortunately, you're young. If it doesn't work out, you don't have as much to lose as someone married with a mortgage and children. The possibility of losing him may feel like the end of the world, but I promise, it won't be. And you have your whole life ahead of you to find someone who is genuinely attracted to your authentic self.
