its not rocket science
Our company ops require that on any PA other than CAT1 we carry out an autoland, the procedure is exactly the same for CAT2 or Cat3 the only change is the minima, normally 50ft & 200m for a CAT3 and a 100ft & 300m for a CAT2 the aircraft config is the same, the calls are the same apart from a 100 above being at 150ft or 200ft respectively.
If the airfield is CAT 2 then CAT 2 limit apply, the Captain can increase the minima required, but under no circumstance (other than an emegency) may he decrease it, so next time your Captain says he will use CAT3 minima into a CAT2 airefield then unless you are visual at a 100ft above i would call go around, if he continues and lands off it, i would contact your operations and ask that they suspend you and file an MOR (not ASR) if your comapny does not support you in this, your in the wrong company.
If your company supports you, then you will be one step nearer to a command and there may well be a position for you!!
Other wise you might be in the weeds or worse and both out of a job
Stay safe