Here’s some encouragement
Muscle Memory: Sounds like bullshit broscience. Whether by CNS or peripheral adaptions or whatever physiological mechanisms that I’m nowhere near able to understand Muscle Memory is a thing.
You’re not starting from scratch. It’ll “come back” or at least your rate of gains will be amplified if you’re resuming lifting from a lower start point.
Gud luck
http://www.pnas.org/content/107/34/15111.short
http://jap.physiology.org/content/70/2/631.short