No, it took me about two and a half weeks, but I wasn't following a strict routine and I wasn't using melatonin or sleep aids.

The short nap of 2 hours tells me that your cycle is probably close to that. Every 2 hours.... So I'd say to aim for between 7 and 8 hours and see how that works. Noisy children and waking up actually start your cycle over, so if you have to wake up in the middle of the night then you need to assess the timing by when you went back to sleep for the last time.

You can find melatonin in the vitamin section at most stores (WalMart, Walgreen's, RiteAid, etc). It's not an uncommon supplement. As I said - I only used alcohol because I didn't even know about melatonin at the time. If I had known about it, I wouldn't have used alcohol (it was good ale, though :P)