[Acroyali]

I dislike free feeding personally, unless you’re out of the home 8-10 hours a day.
If you have two babes, this can make it hard to see if one is not eating as well as they should.
If you’re away for hours, I’d say free feed but keep the puppies separate but close by one another so you can see whom is eating what, and how much, and if one goes off their food, you’ll catch it immediately vs. days later when it might be approaching the “too late” category.
I have no problems feeding small dogs, kittens, young cats, young dogs 3-4 meals a day.
Do not fast a puppy. Especially a toy breed.

Fasting is a GOOD thing for grown, healthy dogs in their physical prime, but only if they’re ADULTS and in good shape (physically).
NEVER fast puppies or seniors, and never fast cats longer than 12-14 hours.
We fast ours twice monthly, but only health adults and never babies or seniors. This equals extending every other Sunday’s breakfast from 6:00AM to 9-10AM, and serving dinner a bit early if we can manage.
Again, seniors and babies (large breeds. 9-12 months and toy breeds under 12 months) are exempt from this. Our large adult working dogs do seem to benefit from a fast, but the “fast” includes a lot of water, bone broth and goats milk and recreational bones.

There’s nothing scientific about our method but when it come to feeding schedules and fasting, we err cautiously.
For your adorable Yorkies…..forget fasting for now, feed your puppies like the growing machines they are and enjoy them! If you never fast them, odds are they’ll thrive and be happy. Yorkies are super long lived.
Do the best you can, and enjoy them.