He's not a grandfather. He's not dead. He's not 92.
can i become a grandmaster if i start at 92

I intend being the lead singer of a world famous boy band when I'm 75. Anyone who says it's impossible is just a 'naysayer'. (i'm prepared to put in the 10,000 hours)

Try to work hard , Improve your game . Then go to a tournament . Remember to keep an Ambulance Ready Outside the tournament hall .

I don't consider 69 Year Old person " Old " . Many people at even teen age act as a " 69 "
Right ? :/
You can but you must study very hard.It is possible to become grandmaster for 3 year.