Well,

I would say you have got a good start since everyone started small and simple. I would ease up on the water till the soil is dry to the touch. Twice a day is excessive.

Depending on your strain three feet would be reached in two weeks of flowering but you never know. When your ready for real growing remember if you want big buds you need big roots which means big pots. Try http://foxfarmfertilizer.com/ they'll get you there.

Loco