Yes, you can. You'll need to visit a local DMV office in order to upgrade back.
Got it. Um, i was told i need to be signed up into DMV's page to check my certification status, is that correct?
Well, it certainly will make your process more easy for you. Being signed up, you'll just need to go to License Status section, so you can determine how is it going with youe self-certification driving type, medical certification status and medical certification expiration date.
Ah, certainly sounds great. I'll sign up later. Other thing, i'm not so good with dates, is any way you can remind me when some of my documents is about to expire?