One thing people here are surprised by is that delayed complications occur. I pointed a couple of years ago that as patients we tend to be so happy to have the surgery behind us that we experience what some surgeons call survivor's euphoria. This initial euphoria can mask some of how we feel. Then too there is the phenomenon of the steroid taper. Once the steroids are no longer present the cranial nerves can swell and inflame causing problems not immediately present the first weeks post op. A point I make and have not read about elsewhere is that if the tumor had mass effect on the brain stem and / or cerebellum, as it was in my case, then parts of your brain were displaced over time and it takes time for brain to get back in place and you need time to adjust to that as well.
To be specific about recovery timetables in my own case, I had taste distortions before diagnosis and still have them 4 years post op, but they have improved or I have just gotten used to them, probably a case of both applying. My vocal cord paralysis took 7 months to begin to heal and probably 18 months before I could project my voice and sound somewhat as I did before. I had bad balance problems, took maybe a dozen hard falls. My head always felt it was moving when it wasn't and when outdoors buildings and cars seemed to be moving up and down. I walked all the time moving my head up and down and side to side until it resolved in about 8 months.
As said before, it can take time for post op complications to resolve, we can heal only as fast as our bodies permit. Some of us had different ways the tumors affected the brain and cranial nerves so one person may resolve complications quickly while someone else requires more time. People who recover quickly after surgery are probably luckier than the ones who do not.
If one thing was more important than others in my personal recovery, it was rest. I would challenge my balance system and then rest, then do it again Try to recover a step at a time you will both get better and also adjust to the those problems that do not recover.