I would start now, to help reinforce that the nail clippers are a good thing while he's young and learning instead of starting suddenly in a couple of months.
Ditto this. When I've got a puppy around I always take a pair of scissors (metal, so they are nice and cold) and touch it to their pads while they are laying down. And I feed them hotdogs as I do it. It makes things
sooo much easier when they are huge and strong to not have them pulling their feet away the instant cold metal touches them.
Even if you just start by training him to have his feet handled, claws manipulated, etc. He'll probably need a lot in the way of paw grooming throughout his life.
And he is super cute! I'm so happy you finally found the kind of dog you've been wanting.