I found about 75-80 of the cells before I lost track of which ones I had collected (because I had skipped over some of the time sensitive ones). I didn't want to revisit everywhere to see what I had missed, so in the end I just used Pokebank to transfer my Zyrgade from Omega Ruby (originally caught in Y). I had become quite attached to that one, so instead of disassembling it, I disassembled my 50% Moon version, added those cells to my Y/OR version which gave me a 100% version with power construct, and had enough cells left over to assemble a 10% form to keep separately in my living Dex.
Felt slightly like cheating, but I am happy with the result lol