You should keep the boy around as much as possible.
Nothing like building memories for him, as well as yourself.
My boy "slows" me down often, sometimes agitates me, however, I'm just not working on my cars, but, us:)
Today, I've offered to have him "help" me with replacing my slob's turbo. It will be a slight upgrade, and the old one is leaking oil.
He is 4. He is also into that wwwhhhhyyyyyy, and the what's that......
Sometimes I just have to answer, wwwhhhyyy not and I don't know.......