Thank you in advance.
If you plan on doing so, I'd suggest you do it immediately. They will probably be able to supply it to you on your court date. You are going to have to have a pretty good explanation prepared on why you are essentially wasting the courts time, as they are going to have to consider putting the whole thing off to another date. If they do, you better be prepared on your next date because they are going to have a trial no matter what.
Either way, you'll have to prepare to go to trial on May 6th. Without disclosure, I don't know how you're going to be very effective. What was the charge? Maybe a plea deal might be in your best interest.