How did you find out that a delusion was only a delusion? Did med change/up made it go away?
How did you feel/react after you found out what you believe is true was a delusion?
Can you have good insight on a delusion one day but later on that delusion became real again. example: in the distant past, you use to feel that you were monitored by the government and then one day you feel you are not being monitored by the government. In a distant future, you feel like you are being monitored again when your symptom flares up.