I strongly second hippo's recommendation that you version control your code. It seems a bit over the top for a lone shark developer to do that, but if you commit frequently it can save you from brain farts, cats, dogs and small children interacting with your keyboard in unfortunate ways, acts of nature, hard drive failures, ...
Really, spin up a git repo somewhere in the cloud and git committing. Not tomorrow, or the day after -today is the day to do it! (Says he who has been bitten more than once!)
Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond