Ahhh, I know your pain. I had blisters on my heels a month ago from ice skating as well and could barely walk. In fact, for the longest time I couldn't even wear shoes without wanting to curse. Of course, I didn't really think to google until afterwards, but what I found is that hydrocolloid dressing is supposed to be the best to use to avoid further irritation since they are kind of like a scab and flexible. Of course, if you use those incorrectly, it can hurt your skin, so I'll attach a website that gives some tips in case you do end up getting some.
https://www.blisterprevention.com.au/blister-blog/how-to-use-hydrocolloid-dressings
I don't know anything for reducing the pain, but here's also a website of some stuff that can supposedly quicken the healing process.
https://www.rd.com/health/wellness/home-remedies-for-blisters/
yo i have two deroofed blisters on the back of my heel from ice-skating. they hurt like shit, i can barely put my foot down all the way when i walk. what do?