Your post made me giggle a little... my husband and I often worry about our now 2 1/2 year old quitting his meds when he reaches those rebellious teen years.  Just yesterday, I said to my husband, "Well, I guess if he does quit, he’ll start right up again once I jab him in the butt with a needle a couple of times."  So no, I don’t think you’re a bad mother; I think you’re getting the job done.  That’s all any of us can do!