I don't think my husband is attracted to me anymore

We've been together for 11 years and married for 3. We've been trying to conceive just about a year now. I feel like our sex life has become monotonous. If I'm lucky, we have sex once a week. But usually every 2-3 weeks. I try to initiate but he's always tired and just doesn't seem into it. For his bday I made "sex dice" and bought massage oil hoping to spice things up. And we haven't used them (not for lack of trying on my part). I always ask if there anything he wants me to do, something that turns him on or wtv and he just brushes it off or says no. I'm just starting to feel like hes not actually attracted to me anymore and the times we do have sex it's just cuz he's horny and needs release.. I used to buy nice lingerie but he just removed it so fast that I gave up on that aspect. what do I do..