How bad is a drought for plants in flowering?

I think i let my girls go to long between waterings (feedings). In 3 week of flowering, how long between waterings should igo at this point? should i just use the ..light pot means time to water or is there a amout of days i should wait? can i feed them more then once a week????

There is no specific time frame or amount of water to give the plants. You need to water when at least the top 2 inches of soil is dry, and water thoroughly, until you see water coming out the drainholes in the bottom of your pots. Don't just give a little bit of water every day or every other day.

As for feeding, I like to alternate, so I'll water, then next time feed, then water, then feed, etc. The amount of time between waterings/feedings depends on how long it takes the pots to dry out for their next watering/feeding.