I have a 2.5 year old. He still naps during the day for about an hour or 2. I try to get some cleaning done and dinner started while he naps so that after he goes to bed for the night, I can sew until I'm too tired to do any more.
Also, I think it's important for daddy to spend some time with him, so, they usually do dinner at the family pizza place one night a week, and sometimes go out on Saturdays when I can have sewing time.
I hope you get some time behind your machine soon!