I have no clue. The last thing GRRM said in an interview when asked was that writing was going well as of April 2019.
Maybe Winds is done, but In 2018 he said in his blog comments that he hadn't started aDoS, so I don't think the both of them being done is true.
http://georgerrmartin.com/notablog/2018/04/25/fire-blood-on-the-way/#comment-701
Regardless, that's one hell of a statement. How was he allowed to say that?