My client died in april 2020. I have filed her tax return from Jan thru april. there is a Living Trust now that has an EIN. nothing has been distributed. there are 2 trustees and they each have a lawyer involved. The trust did make a little bit of money, but I don't know what form to use? can I put an extension in?

it is not an estate yet because nothing has been decided by the trustees. Help I know I am in over my head but clients dau