The examiner does indeed have a duty not to proceed with a check if they think the candidate is not fit, but in a grown up world the candidate also has a responsibility and if you continue with the check and fail you can’t come back at me providing we’ve had a sensible conversation:
’No medical?’
’No, suspended. None of your business why’.
‘Fair enough. Are you fit to carry out the check? If not say so now’.
So, if you are convinced that the medication will have no effect on your performance then maybe start it to keep things moving. Other thoughts:
If you delay the start of the medication will it prolong the recovery time?
When does the LPC expire because a revalidation is always preferable to a renewal?
If you delay either will it have an adverse effect on your mental state? (I like to press on and not to start would cause me a level of stress I’d rather not have - you may be more sanguine about these things).
Hopefully we’ve given enough for you to make a properly informed decision.
Again, good luck