Do anal sphincter exercises work?

I good some ways on how to control my urgency and how to stop bowel incontinence and came to know about anal sphinchter exercise.
I watched some videos and PDFs and will start trying those exercises so that I can control my urgency and can hold my stool when am not able to go to a washroom( as my college exams have started and I cant leave the washroom for the 3 hours which makes me stressed) and I am also in a mild flare have a few washroom trips with urgency being the main problem.
So my question is that whether these exercise in which we have to tighten over anal muscles and relax them help me , or instead can it make my flare worse? Please help me and reply if I should practice them in between a flare or not!
Thank you everyone for helping me out.

^This. Treating your rectal inflammation is the only way to decrease urgency and frequency. I don't care if you have sphincter muscles of steel, inflammation+stool causes your muscles to spasm and evacuate everything immediately. It's not something you/I can control through exercise. When stool touches inflammation, it's painful, your body reacts by spasming your muscles. Like putting pressure on a wound, it hurts.

I am 20 year old and my inflamation is till 9 cms. Thankyou everyone. I understood your point and can conclude that until my inflammation is under control , this exercise wont work.
Currently I am on high dose of mesalamine azathioprine some multivitamin , folvite, probiotics. I am not on any rectal meds for the past 1 year. I tried steroid and mesalamine enemas . Was never successful in keeping them in even for a few minutes. Steroid enema could still be kept for some times but not even once got success with the mesalamine enema. I had made a bulk order of the enema for heavy discount and due to not able to retain , all get wasted and were thrown after 1 year due to being expired. I could keep the mesalamine suppository , will that help with treating the inflammation of the rectum? Will it reduce the urgency? If yes than I will start keeping it twice for a month.