[Draco]

Draco is 9 months, with silky hair. His hair has been thinning/shedding a lot more than I'd expect. when he was a little younger I noticed the hair only coming out in the brushes and it was puppy fluff.
Anyways, I use Espree products for grooming, except the grooming Spray I use Vets Best Conditioning Mist because I'm allergic to lavender which is in the Espree spray. He's been eating Royal Canin for quite some time, and his treats are the same.
So the only thing that has changed is the time I'm away from home. I started school and am now away from home an extra 8hr on Mondays and 2hrs on Wednesdays. My sister stops in him on Mondays. I live alone and work 4-5hr nights M-F. This is the only change, and I feel it might be stressing my baby out. It's only just started cooling down here. But I started getting really bad dry skin a month ago, maybe he is too? His skin doesn't look irritated at all, no bald spots, no fleas, and no flaking.
Any Advice? His shedding really is a lot more than I'd expect as he sheds on my couch and me sometimes, but it's his entire coat and not just one spot. So I really feel it's stress especially with yorkies having a history of separation anxiety.