Transplanting after 12/12 switch

[1970s Grower]

I am growing in a cabinet with limited space. I have 8 plants in 1 gallon square containers of which only one has shown me preflower pistols. I want to transplant the females to 3 gallon buckets as I find males to pull from the grow cabinet to make room for the 3 gallon buckets. Right now I don't have any room for 3 gallon containers in the cabinet.

Can transplanting be done 1 week after the 12/12 light duration switch? It would only be a week to 10 days before I see balls on the males.

 

[Twelve12]

Sure you can. Avoid transplanting after the switch, the plants will stretch during the first few weeks in bloom and need to grow out their roots. Transplanting after 12/12 may cause unwanted stress to the root zone. Stress recovery during flowering stage will cost some yield since energy are used towards that instead of bud site production.