I do not need to shoot all year to maintain precision shooting. The pins are on or they are off. I can drag the bow out after not touching it for 9 months and group 6 arrows inside a 6" circle
Depends on your defenition of precision

, and how good you want to be with your weapon.
6" groups can get it done but there is huge room for improvement IMO.
Whatever skill level you are comfortable with - If you think you are good enough to get the job done then do it
For me I shoot all year long - I constantly strive to better my archery skills - Its just a huge part of my hunting experience. The more you shoot the more you realize how much you can improve.......LOL.........
Besides if you practiced more you would have to change your name..........
