There are times my pitch will dip. I notice various psychological things will trigger it, such as having to get the kids to pay attention to me. I can't shout but I have to raise my voice a bit. I use more hand gestures as well. It won't dip as low as preop though, but it goes down a bit, I would say down to 170-180Hz.
My voice doesn't get that tired but I do get phlegm which I have to clear, as you may have noticed.
Also, I noticed a huge difference between month 1 and month 2. I did regain power and clarity in month 1 but that is on a whole new level with month 2 in the rear view mirror. The exercises do help but I think in general things are stabilizing.
Oh, and I really don't take much pitch readings with Praat anymore. Real world feedback is fine, and I haven't been gendered male once since I started talking again. I also don't pay attention to my voice anymore. I just talk. I would say just relax and work on the exercises when you reach month 2.