I agree with lip it does need all the light it can get during flowering definatly during the last 3-4 weeks as the buds will really swell up in this period....But if your intentions are to keep it alive then go more light if u can! And as for the ferts you aint got that much longer to go by the look of things , most people stop fert 10-14 days before harvest and by the look of yours u got 3-4 weeks left das all

But if its been in those conditions for at least 2 months and is ok.........then fuck it mate jus do wat ya doing......sell some of your shit to smoke......n buy another 9 pots....lol....................an goodluck