I used a blister prevention spray (us not Canada tho sorry, but maybe that's less restricted than lidocaine) that helped a little bit, but I second the recommendation for platform sneakers! I found great ones on Amazon and didn't feel any pain after I switched to them.

Edit: link to the sneakers https://www.amazon.com/dp/B08MT6VDFD?ref=ppx_pop_mob_ap_share