You need to find out if the 120-day VGLI waiver applies after the two years are up. When you exit service you can convert your SGLI to VGLI without proof of good health within a 120-day window. Afterwards proof of good health is required and most disabled vets have their applications denied or only approved for really low amounts.
Servicemembers’ Group Life Insurance (SGLI) offers low-cost term coverage to eligible service members. Find out if you're eligible, and learn how to manage your SGLI coverage while you're serving—and convert it when you separate or retire.