PEO appointment required in between 20-28 Sep

[nks]

Hello, due to urgent change in cisrcumstances, my spouse wants to apply T1-General extension at PEO rather than postal application. Dates we need are in between 20 to 28th Sep. I know its near impossible to get it online but wondering if there is someone on this forum who is planning to cancel/postpone the appointment, which we can use. Many thanks in advance for any help in this regard.
nks