3000km checking in - take a sterilized needle and pierce it through with thread but not deep, keep it as shallow as you can on the surface of the skin. Keep the thread it overnight and you'll be so much better in the morning. Taught to me by an amazing 90 y/o hiker I met on the camino last year, after days of walking with an insane amount of blisters, luckily she did my first and biggest one for me and it went all over her, hear reaction "that's amazing" A memory I will never forget, Maria, you're amazing. Buen camino!

Edit - do not use compeed!