Most mentees belive that they need sync mentorship to be able to explain their problems. However, I've found that doing an async mentorship using text to provide better results. Mentorship is a long term process, you can't "fix" or "improve" someone in a session, it takes time.
The mentee will pass in the 3 steps of the mentorship cycle. The first one is to be in a given situation, or having some problem or doubt.