Anal... tips and tricks?

So, my husband and I are trying to get more into anal play. He’s really into it, I don’t care either way. But it hurts for me. Like, even a pinky finger hurts. We use TONS of lube, so I don’t think that’s an issue. I’ve tried relaxing. We’ve even tried getting a bit tipsy before to relax. And usually I am super relaxed anyway? It still hurts. Is it possible that it’s just not for me? Is there something I should try?

I really want to be able to do it since that something my husbands into, but if it hurts I’m not doing it lol.