I'm having trouble slicing a sprite map

I have recently found a nice sprite map for a character(linked below). The only issue is that I have no clue as to how I can slice this map so that the character doesn't "wobble" when I create animations from the character. What I mean by that, is that when you automatically slice, it will create various sized sprites, which is not what I want. I have also tried various grid slicing and column by row slicing- but these either cut too much or leave too much white space. Can someone take a look and see what the best way to deal with this is?

https://legnops.itch.io/red-hood-character

Thanks!