How to get pregnant when you need see your husband?

My job sucks, my husbands job sucks and it has become our lives. He works 80+ hours a week, we have our son on the weekends and to be truly honest I could count on both hands a foot on how many times we’ve had sex in the last 8 months without any success. I’ve seriously been thinking about either going straight part time or completely quitting my job because the amount of stress our jobs have been causing is enormous. It’s been creating serious issues within our marriage and has gotten worse when trying to conceive without any luck for almost a year is not making things any better. What can I do? What can we do? Has anyone else had these problems?