borneopothead

With Autoflowers leave the lights on 18/6 or 20/4 hr cycle and use at least a 3 gal pot from start to finish don't transplant, evrything you do slows down the rate of growth and Autoflowers don't live for long so time is limited.

You could harvest now if you really want to but I would wait another week for a more longer lasting high, usually when aprox 80-90% of the white pistils have changed colour and showing whiplash. Going by your photo you have aprox 40-50% turned but your top pistils are still erect which means it's still going, this is only a estimate because this can vary within different strains so the way to know for sure is to inspect the trichomes but you'll need some sort of magnifier.

oh and try to find fertilizer for tomatoes it would probably be easier to find