[VickyA]

Is there ways to maintain them on low dosage/less herbs after a certain time?

Yes absolutely there is. After you've stopped growing or don't want to grow anymore, you can go to a maintenance dose of the herbs which is much less than what you would have been taking before and will help to make sure than you generally don't lose the growth you have achieved. It's certainly not recommended that you continue to take your full program in the long term.