True story Bro.
When I was 16, I lost a game of 21 against a guy I should beat every time. I decided I wasnt going to bed until I sank 15 free throws in a row. It took me until 4 am (from about 10 pm). From that night on, I could make free throws and shoot a LOT better than ever before.
My point is, that DD will develope a great "muscle memory" if he keeps it up. Here's hoping he does.