Hey Hairy.
Ive heard about early introduction of bloom nutes slowing it down, not sure how that works though. So, I dont know about it as fact.
Ive always been advised not to cut anything off except for dead leaves. Cutting that stuff off could hurt your overall yield. Since its on a timer, and doesnt have time to repair without hurting the yield. Time that could be spent on bud production, will be spent on repairing from w/e you cut.