Constantly stretching the heel in two ways works well for me, both to cute it and prevent it in the future.

The first is hanging your heels off a step and letting them stretch down, both with straight legs and bent knees (one foot at a time).

The second is putting your heel as close to a wall as possible, with toes on the wall.

Both work better with sneakers on.

Shoes with a wider toe box. Take your uncomfortable shoes to a reuse/charity drop off and never look back.

Every time I wore shoes that were too narrow my problems multiplied. Reworking the laces helped a bit but it was not enough and I had to switch brands.

I wonder how it would go without shoes. It's an enjoyable change from wrapping your feet up all the time anyway :)