Hi!
Welcome!
We have a lot of guys owned by Yorkie's on YT.
Yogi didn't like the Nutracal either, and luckily he ate really well and often so never needed it. But it's a good idea to have it on hand so that you can put a dab on the roof of their mouth if necessary.
I like the name Diesel. It was one of the ones on our short list for Yogi. As long as the area he's playing in is puppy-safe, you can let him play for as long as he wants. Just be sure his bed is accessible and he'll lay down for a nap when he needs one.
Here's Yogi, being the sweet boy that he is, sharing the pillow with his big brother Boo.