Sex drive

Hey everyone... So I have been with my hubby for 10 years married for 6, I work full time and wake up at 2 am everyday my hubby owns his business so he gets home kind of late and we have two boys 5 and 2 we used to have sex like every day!! But since I had my boys I really can careless about having sex but I don't want that to become a problem in our marriage... So I'm wondering what y'all do to get your sex drive up?!  Help please!!