You're definitely aware and should put yes to both then.
Don't let someone else who may or may not have an alternative motive put you off.
Their circumstances may have been different to yours.
You are aware. Even when you made a mistake once, you were aware of it.
YES! and YES! Make sure you put it in writing to your Dr & ensure the mistake is listed on your medical records as an error, prior to the DVLA contacting him/her to confirm as well.
Just incase the full notes of it being an error are not recorded on your records.
Good luck xx