Wow, you're in a tough spot. Maybe he just needs more maturity before starting Kindergarten? Could you put him in a half-day program for this year and then re-evaluate? Or, even a mothers-day-out program so he gets some social exposure and you get some time to yourself?
I think if you try to push him to be ready then you'll both end up being miserable. Sounds like he's just not interested, yet, and that's okay, too. Someone once told me, after I asked rhetorically "what do I do with this child?", "Just love him". I thought that was pretty great advice and sometimes forget it in the everyday battles and stress we create.
I know that's not much advice; I hope you get some help here.
