The Egg is Ready but He Can’t Perform

I’m so bloody frustrated! We managed once over the weekend and the 2 days before I ovulated then yesterday arvo I get every sign, an opk as positive as anything, so frisky I’m like this is crazy, I jump my hubby and boom he can’t finish the job (it’s 10:45 pm and he’s too exhausted he says), try again in the morning he says. I’m still half asleep he wakes me up and again we go for it this morning, started out brilliant and then boom there it goes again. Deflated...I want to scream I’m so frustrated! We just don’t have the time for this now to be the problem. I just don’t know what to do, he wants a baby but his head is everywhere else but in the bedroom. He used to have the highest sex drive, he’s 50 next month and it’s all turning to custard. 😢 Has anyone else experienced this? He’s going for a sleep apnea test in 8 weeks and works long hours but I still can’t understand where it’s all going wrong, can being tired really halt the fireworks? This is the 3rd month out of 6 where it’s gone down on the day I’ve ovulated. I just want to cry!