Making time for sex with a baby?

Looking for some advice on finding the time and energy to have sex with your partner after a baby is in the mix. We have a 3 month old and he works full time and I work part time. By the time dinner is made, chores are done, and the baby is put to bed, we just aren’t in the mood. Every time we try to get the deed done on the weekend during nap time, the baby seems to wake up despite being quiet. Any advice?