Welcome to the forum, Amy!
I have an almost 3 yo boy, he's either bright or gifted, I've not yet had him tested. I find myself overwhelmed by him most of the time. Gifted boys are exhausting, especially if they have some Overexcitabilities/sensitivities.
my best advice to you is to read as much as you can, post your questions here, and look around your area for similar kids.
FWIW, I too struggle with finding kids who have the same interests and play skills of my LO. It's a journey, and I'm hoping we find a good friend for Nick. I see that my LO does better playing with the older kids. smile

hugs and welcome!
CAthie