Begging for sex

I just got married in October and ever since my husband won’t have sex with me! We have sex maybe once a week and that’s if I start it and make him. Most of the time he doesn’t want to or is too tired. He doesn’t masturbate and we are always together. We are a very intimate couple with snuggling, kissing and touching but when it comes down to sex he does not have the drive. I have toys, lingerie and we are very open. I have no idea what to do, we’ve talked and talked