Help! Still no sex life 4+ month after birth

I think the tite says it all! Still haven't had sex and our son will be 5 months old in 1.5 weeks.  My husband is not typically a sexual man anyway but since I got pregnant, he stopped wanting it or at least getting it. Last time we had sex was when I was first pregnant that was over 1 year ago!!!!! :( I'm so horny I'm having super sexual dreams. I don't dare to masterbate b/c it will only make me hornier! I know the solution would be to seduce my husband but I'm soo tired all the time. He never makes an effort to seduce me. Waaaa! 😭 I need to have real sex, the kind that makes you sweat and sore.