I did this, used "anytime logbooks". They are pretty navy centric (owner is a former tomcat pilot and markets mostly to us), but it was super easy and quick, and I have no doubt they could handle any type of logbook(s). It was $400 a few years ago to do my 4 books. Just used the turboscan app to scan all the pages (an app I might add that I have used so much since then for other things that it is silly I hadn't bought it before this). I'm sure there are plenty of others, but I was very satisfied with their customer service and efficiency.
I'm also terrible. Haven't logged a single 121 flight I've flown. I feel like maybe I should be doing this, but I have yet to ever remember to at the gate.