Neurology and 2y old

Has anybody taken their toddler age 2 group to see a neurologist?

How do I prepare and what should I expect?

My sons either very emotional and clingy to me or he’s a runner and can’t sit still there’s no in between

we took him to the eye doctor and that was a shit show lol almost had to reschedule it

Im trying to do some research so I know what to expect with this kind of visit.

TIA