Students feel free to stop buy anytime during office hours. I'm happy to discuss any and all issues and concerns you might have.
If you can't make one of those time, please email me to setup and appointment. You may also just try swinging buy to see if I'm in the office. At all times though, to ensure I am not busy with another student, please consider setting up an appointment. The only time I will absolutely not be able to help you is the hour before any course on my schedule.