12/12 & nutes.

Ive vegged my jock horror and crystal limit for just over a month now and im about to change to 12/12. Do you guys change over to flower nutes as soon as you change the lights over? This is my first indoor grow, usually i just put my plants in the bush and let nature do the rest. Thanks for any info.

I usually give one good watering a few days before flower than bloom nutes