Most students find that one or two 30 minute rehearsals are sufficient before an exam, but I’m happy to schedule as many rehearsals as a student would like. The important thing is to feel happy and confident going in to an exam!
I also offer Exam prep sessions. This is either a 30 minute or 1 hour session, in which I play through the pieces with the student, listen to any unaccompanied pieces, and work through the scales, aural and sight reading* required for the exam. After the session, I can provide either verbal or written feedback or what went well and what can be worked on to improve.
*The appropriate sight reading book must be provided.