He’s just not interested..?

Alright so my boyfriend & I have been together for 10 months. When we started dating I weighed literally 50 pounds less...yeah, I packed on the weight. I have depression and that contributes but we moved around a lot for awhile and I started having bad eating habits, but I’m working on it! He tells me I’m beautiful and acts normal I guess, but for the past I don’t know 3-4 months, he’s been less and less interested in sex from when we first started dated. I assumed that was the “honeymoon phase” just really wearing off. It would be 3-4 days between having sex and whenever I tried to initiate it, he was less receptive and wanted to play games or just watch tv or he was tired, etc. We have our own apartment now, and the sex has still been on the decline. I think I do have a higher sex drive than him, but now it’s been a week since we had sex. I haven’t been trying to get him interested or initiated anything, because I’m tired of being turned down. And it sucks feeling like he’s not sexually attracted to me anymore. I know I’ve gained weight but I still take care of myself and he knows I’m trying to make that change. But I don’t know what to do! I’ve talked to him about it in the past, and he just ends up feeling like shit he says. So if anyone has any advice PLEASE help?? I don’t know if I’m just being insecure & paranoid, if it really is the weight, or he just isn’t into me that way anymore? Yesterday was our 10mo, and I figured he’d want to do it but he showed no interest in doing it. 😓 I went to bed while he played video games. Sorry this was so long I just don’t have anyone I can talk to about this...TIA.