Decide on a shoe area to declutter (you don’t have to do all shoes at once, just start with one area).
Take everything out, because leaving all shoes in their place and just picking the ‘go’ ones will potentially create a negative emotion every time you make that decision.
If they are all out and you just put the ones back that you love and will wear, it is a positive emotion.
You can then deal with the rest in a bulk decision. You will get rid of 30% more this way!