In m case, I had questions, he had questions. At the first appointment the judge decides which ones need to be answered.
So if, like me, you have all your answers anyway, it’s not a problem.
I am not sure if you can supply answers before the questions have been allowed?
If you are happy to answer the questions and want to use the first hearing as FDR, there is no reason why you cannot provide answers in advance. I should send with a covering note re-iterating your wish for the hearing to be FDR.
Have you asked any questions that need answering? Are you applicant or respondent?
When you feel you have sufficient financial disclosure (and in advance of the First Hearing) you should prepare an offer (which may be without prejudice or open) and send to the other side. You should put together evidence to support your offer - details of suitable housing etc and share it with the other side and the court.
The judge may well decide to treat the hearing as FDR if there is no obvious reason not to do so.What is the reason your ex has given for not doing this?