there's nothing wrong with a sativa man, personally I love them and prefer them. but i want to make sure you know I was not making fun of anything you were doing or anything like that, I just have experience with sativas an I thought id help out if I could. 

A few tips i can give to help out would be to mention the darkness cycle, even though it is an auto it will flower faster with more darkness. More light = more bud but you also get a longer seed to harvest. 

my second tip would be to give it 1-2 days of pure darkness to push it into flower a little faster and you could fix the light schedule back afterwards.