It shouldn't take long. When you go to your appointment ask where eligibility office is and when you go there to eligibility ask if they have your correct address and info. You can also in a few weeks call VA phone number and ask if they have correct address and phone number. Anything other than that can be fixed by telling them when you go to your appointments. Take advantage of all your entitled to with VA and ask questions! VA phone # is 1 800 827 1000 VA hospital and medical clinics will give you their phone numbers. Good luck.