How do you declutter toys when-

Your child will play with the toy if you put it in front of them.

Anything they have outgrown, their younger sibling will be able to use.

Nothing is broken/worn out.

We just plain have too many toys in our space and some things have to go! I just can't figure out how to decide what should go bc my usual decluttering criteria aren't working here. My child can't even see what to play with or have room to sit to play, there's so much stuff.

Disclaimer, I know we are so fortunate to have this problem. :)