The other option is to make morning's much busier so he's actually tired enough to rest for the time you are hoping to have to yourself. Having a busy outdoor time during the morning is the best way of achieving this.*
Hi, I agree with Suzie_Homemaker, lately my last groups of children are boys:0)

They're very energetic and I just wait for them outdoors no matter the weather, it really has to be awful for us not to be out. We do walks, visit the parks earlier and comeback by lunch time. After lunch most of them are ready to nap (toddlers and babies), and my preschoolers do mostly table top quiet art or work. I do not have any break, I eat when I can or when the babies go bed. And after I focus on my preschool kids and prep. My afternoon snacks, a daily log, and anything important. When all wake up do the potty training and feed them and work on a group activity such as putting together a.big puzzle or learning other skills. Until moms and dad's come.

If a baby wakes up in the middle of the nap time he just joins the older group.

Once the last child leaves my home, then I carry on with my very own time. (Cup of tea, a treat, or go for a nap, a diner out or read a book, etc)