scan all my old photographs

I started doing this about 2 years ago. I scanned all of my old professional pictures, and got copies of them. (as some of the originals were damaged from age!)
I wanted to scan all my old candid photos (pre-digital! LOL) and then get new copies, as my old ones were 3×5’s and I want all 4×6’s. Well, I scanned about 5 photos, and was touching them up. Problem was, it was taking me forever to touch them up & I just eventually gave up and have never finished it.
I need to go back & finish it, because not only do I want the new, bigger copies, but I want all my photos backed up on my computer, should something ever happen to the originals, so I can get new copies! I really have to quit putting it off!!