Check the clutch is moving manually with engine switched off feel for easy or tight movement.
Then find the sight glass in the system see if you can see any form of liquid there if not quick and easy way use one the we will check your AC places like ats or such like they can connect and check the system.
it does not take much for the A/C to stop when gas levels are low and this can happen when the a/c is not used as the compressor seal drys up and gas leaks past this point often also so its always good to run a/c whenever possible even in winter just to keep system in operating condition.
let ne know after the above checks