He sounds great.
no need for 'intervention' at all, he's doing fine. I'd steer clear of the 'tricks' stuff though, tbh. Nice party moment, but not really indicative of learning per se.
Ds1 was similar, and had self taught some maths stuff. He started pre-school slightly earlier than normal as one of his siblings was born with a disability and the lea accepted him just before his birthday to give us some respite. Pre-school were faintly alarmed and didn't know what to do with him - the lea refused to assess him as they don't recognise 'gifted' until stat school age (and even then don't bother to do anything, really). So he ran with the yr r kids for a bit, but was already in maths terms around 5 or 6 years ahead.
It's all fairly pointless really. He's still mr normal in normal school, doing normal things. We've never taught him anything.
Dd2 was freakier. She's the one with the disability, but had taught herself to read before she learned to talk (no idea how).
The other one did the alphabet thing at 18mos (she was a total sponge and dh taught her one weekend when I went away). I came back and she could recognise random letters, and go find stuff that began with them. Weirdo. (Dh not her). She's pretty normal. Clever, but not out of the box. And she works hard, which makes up for a lot.
Even if kids are 'gifted' there's no need to 'do' different things with them. Just expose them to as much life as possible, have fun, and make everything interesting. Just the same as you would for all kids, really.
Plenty of time to ponder education later. Some parents have gone to the trouble of tribunals to force schools to recognise more able kids. But you have loads of time to find out if this is going to be necessary.
In the meantime, he sounds great. Not necessarily gifted, but maybe bright enough to later need some differentiation. Not now, though.
Right now, he's three. It's nice if he sits down and reads himself a book (it used to give me a welcome break) but it isn't something you need to force. Or even slightly push. If he wants to read and do quadratic equations, he will. 