Exactly what I told
@chahalsatinder.. Apply for a Visitor Record for his father esp. if the PGP application is on going.
@chahalsatinder If you are that worried, go to their webform and ask them. Provide you dad's application number when you applied him for Supervisa and UCI so that they can look into it. Calling them will not be sufficient as they are just agent but unable to see your application. Through webform, they can forward the inquiry to the officer that is looking after your application. Also, mention your application number for PGP. If it's only your dad you are sponsoring, yours will be quicker than mine. Mine, took 3yrs for PGP application before they requested the medical.
I am applying at least 30days for Visitor Record before the expiry of his Supervisa if no PR approval in October yet.