V.A.
Hi S.,
My 1st stopped taking naps before age 2! I had to resort to a "Quiet Time" I told her she didn't need to sleep but she had to be in her room "quiet" for a certain amount of time. Thankfully, she loved (& still does) books. She would sit and look at books.
Good luck, I know it's hard because each child is different and it may take some time to figure out what works for the both of you.
V. A