I am sorry I have just discovered I can't make the meeting at 2 p.m. Would it be possible to reschedule to 1 p.m. on the same date?
Would it be convenient for you to move our meeting from 2 p.m. to 1 p.m. I am unable to make an appointment on that time.
Could we reschedule our meeting to an earlier time? 1 p.m. would be perfect for me. I am sorry for your inconvenience.
Is it possible to reschedule our meeting to an earlier time?