I know you want to please your grandparents but with dementia things can change in a matter of days! Maybe they would rather see you happy first, with the "love of your life"..we aren't promised tomorrow and they would probably understand your relationship rather than your education. I'm proud that you want to accomplish things so quickly but at what cost? Your health is at risk, and you will be no good for yourself or anyone else if you cause something to happen by not taking care of yourself..please take time to really think this through. Good luck in whatever you decide..