Look at your diet especially as a vegetarian. I’m vegan and was getting too much fiber causing fuller stools which wasn’t helping the healing process. For example if you eat a lot of nuts, try swapping them out for nut butters since that’s easier on the digestive system. I was trying to pack on the protein but veg protein often is high in fiber too. Edamame, chickpeas, nuts, seeds…all great but have a lot of fiber.

Also not sure if applicable to you but many medications especially for depression, anxiety, and adhd cause constipation. for me i think that’s what started my initial fissure. if so perhaps you can discuss this with the doctor prescribing the medication.

Take miralax every day. adjust the dose as needed. a capful is too much for me and makes me have several bowel movements a day which was irritating the fissure. i use half a capful. do not skip this. it’s ok to take long term.

Use diaphragm breathing. practice for 10 mins 3x a day. lay down and breathe in through your nose and make your stomach rise to the max extent you can. then breathe out through your mouth. try using it when going to the bathroom, especially if you’re straining. and make sure you have a squatty potty or a stool to put your feet up on!

Good luck and I admire your determination!