Shagrathanswered grow question 4 years ago Hi!
Basically mainlining is started when the plants have grown 5-6 nodes and you top to 3rd and remove the 1st and 2nd. So like the others said, maybe transfer to bigger pot and let them heal from it and then top. It might seem slower but the stress from topping etc will be much smaller when the plant is bigger and growing healthy again!