Sorry if this is the wrong forum, i cant find my question in the search tab.

Whats the best way to freeze sponge?

is it ok to fill it with buttercream before freezing? Im making a pink cake with Regalice covering so should i cover first before freezing or can this wait?

How should i wrap it and finally how long will it last?

Thanks, sorry again for wrong forum(im quite new here so still finding my way about)