sorry man....just never seen a first time grower go to such lengths to fail when unnecessary...you could top them into small bushes and keep em in small pots and easily stay under 3 feet
that training could stress em into hermie at such a young age
my rose bushes are too close and two marijuana plants will not thrive in one pot (especially when tied down...lmao again...fkn hilarious man...sorry)
I tie mine down sometimes to expose more bud sites but I do it gradual over time but after it has some height
also, believe it or not there is plenty of Co2 already available....it's why most plants thrive in nature
I respect your determination so don't give up if this one doesn't work out
I top mine for 4 colas but can top them for many colas like a bush
I have limited space and height restrictions....here are some pics of small White Widow, etc.