Any chance the doctors your daughter has already been working with have any connection to the school district? They might be able to start the conversation for your family.
Otherwise, the simplest thing to do is write a letter requesting evaluation. I'm sure the data and doctor's info already had will be useful to this. Remember, the letter doesn't even have to be particularly thorough. They are required to respond, but as has been said, likely the school district is bare bones right now and usually the request timeline is "business days" anyway, so I wouldn't bat an eye about needing to wait until school has started, because that's when they'll actually have people to handle it and will properly be in business.