Anal fissure healing after surgery

I had anal fissure for 2 years and kept dealing with recurring pain. Was given various things until I just couldn’t handle it anymore and needed to get a surgery. Finally did a Botox surgery a month ago, but I am so worried about having some occasional constipation because my stomach just does not push everything out sometimes and then the next day the first movement is a hard pellet. Everything is fine afterward but I have to deal with the stinging pain. I am worried it’s never healing even after the Botox. I keep up with miralax and fiber, I am tired of restricting my diet as it makes me depressed. This is really affecting the quality of my life as the pain just makes my mental health bad. I feel like I can’t do much after a painful bowel movement in the morning. Will this get better?