4x4x4 rockwool

how long can i veg a clone ina a 4x4x4 rockwool in a flood and drain set up i just wanted to keep them there until the flower room is done 8 weeks

I grow in rockwool and veg sativa 4 days, indica gets vegged 14 days. I cannot see any reasonable indoor plant staying reasonable for 56 days.
I have done this to myself before. I topped one plant 3 times, bad idea. My new response is to bite the bullet, take fresh clones and when they root toss the mother. New plants and new room will match better. My clones do not take 8 weeks from cutting to budding. After cutting 2 to 3 weeks has them ready to transplant, leaving 5 weeks for veg.
Take the done date of the new room and subract 3 weeks plus the veg time you want and clone on the best day.

PS: I have had really good consistant results flooding rockwool, lots of ways work but this is my favorite.

i vegg for 2 months because i flip them wen there about 3ft and thnx m8