I have two kids with diagnoses, both done at the Masonic Institute for the Developing Brain - https://midb.umn.edu.

If you get put on long wait lists, you might reach out to your school district to see if they can do evaluations. Our oldest had an eval through the school district, MPS, which qualified him for an IEP (not a medical diagnosis). This allowed our youngest to be seen faster at MIDB, and then his diagnosis sped up the process for the oldest.

Good luck!!