You can cut off all the leaves that are completely dead. Then you can see if
there is anything left.

Put it in a partly shady spot and keep moist. If you can get full morning
sun but protect it from afternoon sun, that would probably be best.

Be careful you don't overwater tho since it is now using much less water
than it was when it had a bunch of leaves.

Maybe it comes back, maybe not. Maybe with that many roots down below it
will really pop in the fall and that would make saving the plant worth it,
no?.

hth,
John
Austin, Tex

Good ideas. In spite of their delicate appearance, ferns are pretty tough.
zemedelec