Law

As far as I have it, the most important service a teacher gives you is not the actual teaching - it is their consistency in getting you to practice. I have made great progress on my own through mobile apps and language courses from book stores; the only problem is that it took me a few years because it is difficult to stay motivated by yourself. It is the same as going to the gym - if you don't have a training partner, you are going to miss a few days.

This is really not that much of a problem. When he's speaking to you and you hear his pronunciation errors, just repeat it in the correct way as if it is a passing comment and then continue listening casually. He'll probably repeat it after you in the correct way and from then on he'll remember it.