Howdy and Welcome fellow Texan!
I am so sorry to hear about your foot. Getting a diagnosis can be very frustrating. Make sure they have done all the appropriate rule out and re-check for your surgery. 4 months out is not very long depending on your procedure and the normal swelling from foot surgery can go on for quite a long time. Bunion surgeries are commonly reported to take a year. My own experience is that pretty much any swelling in my foot aggravates the nerves. That aspect may improve as you get further out from surgery. Since you are early into this, I think there is a lot of room for healing and improvement. As you are here in sunny Texas and pools are easy to access get in the water to do PT and walk if you can. Using your limb gently and without causing flare is key to getting better and avoiding loss of function. The water will help with swelling as well.
I have seen great doctors in Houston but my PM is fortunately in Austin at Capitol Pain.
I'm not sure how soon you can send a PM since you are new. The FAQ may say. Feel free to send me a message anytime.
You've have landed in a soft place at least and will find this a great place for sharing and support. I hope you find relief and healing soon.