Shooting a 9 mm and a .22 LR are at times two seperate worlds. Also the way it sounds I am guessing that you have not been shooting as much as of late due to lack of ammo. There are probably more reasons than that, and we all have them.
Shooting is a very perrishable skill. Lots more practice with the gun in question sounds like it would be of great benifit as well.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.