Answer:
This is what it should state,
Dear, (Counselor's name)
Is there any chance that I can probably meet tomorrow for a schedule change. I would like to change my schedule because... (list why you want it). If so, please let me know!
Thank you,
(Your name)
Step-by-step explanation:
This way, you can have better grammar and make sure that your words are only requesting, and respectful!