@JGF Welcome. I am 10 weeks post surgery now. I also had the burning sensation post surgery, my urologist got a urine test done to check for infection but that was clear and the burning sensation cleared up by itself over a few weeks.
I agree with @Greensleeves351. My best resource to date has been the specialist pelvic floor physiotherapist I am seeing. At our first session she did a really good job of explaining to me what we needed to deal with and why pelvic floor exercises are helpful, in addition to working through the initial exercises with me. At our 2nd session she got me to attend with a full bladder and she put an ultrasound machine over my bladder and checked herself and showed me on the screen that I was doing the exercises correctly on the correct muscles. I could see the fluid level in the bladder rising and falling as I clenched and unclenched, which gave me a lot of confidence to continue with the exercises religiously. And she has been great to ask questions of and bounce things off, as she has a lot of experience with guys going through exactly what I am going through.
At 10 weeks I am now at the point where the remaining internal urethral sphincter muscle traumatised during surgery should be starting to slowly recover and kick back in to help with bladder control. And she has increased the number and clench time of my exercises and introduced some new ones as well. I am pretty good now at staying mostly dry at night while getting up twice a night most nights to empty a full bladder, which is back to my presurgery routine ~ and also while sitting or lying during the day, but taking the dog for a daily walk and doing tasks around the house and yard are still challenging and usually wet experiences requiring pads.
I have been concentrating for some weeks now on "tightening the tap" as my physio called it, meaning focusing on not running off to the toilet every time I get an "urge" to pee ~ apparently the bladder needs to be retrained to allow itself to fill before triggering an urge to empty ~ and I can hold my urges pretty well now while sitting/lying until my bladder is quite full.
I am only a few weeks ahead of you in my recovery, so don't hesitate to ask any questions you may have, and please let us know how you are doing so we can compare notes and help keep each other motivated.
Cheers, Doug