Nt sufficient only prepladder
Rapid revision is end game like some subject u not able to revise then use RR it’s work in its name it’s decrease ur anxiety nd ur fear… Increase ur confidence but u can use this 1 or 2 month before exam depend upon ur gt score preparation level… Go through mai video or at least notes proper improve ur weak topic concept or subject … Best of luck for ur journey
No first do it from main videos and then revise it from rr
More than enough