Tips for daffodils that have stopped flowering but still very green?

Have a heap of daffodils in the garden. I’d like to replace them with something that flowers over summer, but even tho the daffodil flowers died about 2 months ago, the leaves are laying over but still very green and only the very tips are just starting to brown.

I dont think i have enough room anywhere to transplant all of them while i wait for them to die down.

What are my options here?