Had to take 5 months off gym, when does muscle memory kick in???? HELP

Had an abscess had to take 5 months off Put 10kg of fat on Used to bench 315 for reps now I can hardly do 185 for reps It's been a week since I came back

from Bodybuilding News Updates https://forum.bodybuilding.com/showthread.php?t=174015751&goto=newpost
via IFTTT