put your finger in the soil and if you hair stands on end then it's time to water! Come on seriously, just water like you would in the veg cycle buddy.
What I've heard the only time water cycling may change is the last week or two when they will hold off on giving it any as to "pre-dry" the bud before harvest to speed up the process.
Don't mean to sound like a POS but that question was a bit remedial.(sorry i'm a bit edgy today):wtf: