I'll make it short. I believe that such coachings are most valuable in the very beginning and towards the end of preparation/closer to the actual interview.
In the beginning, it is crucial to get guidance on how to prepare and to understand what really matters to the inteviewer in order to give you an offer for an internship/full time position.
Towards the end, it might help to do one or two sessions with a coach that can provide last quality feedback and give some more specific advices for the upcoming interview.
Everything in between is about practicing as many live interviews with fellow applicants/students as possible to improve and get used to it.
What I am offering: Based on my beliefs above, I am convinced that I can give you a valuable head start if you are in the beginning of your prep, or I can help you fine tune your skills towards the end and equip you with some last advices on how to evenutally succeed in your interviews.
What I am not offering: I am not available just for practicing multiple cases. Happy to give you 1-3, but you don't need (to pay) a coach for just practicing 10-20 cases - there are enough students here on PrepLounge to practice with you.
Note: For sessions, I am only available on the weekends.