Hello everyone!

I'm a new Yorkie mommy and trying to figure out what's best for my little Zoe. The breeder I got her from (who shows) says she uses a specific human shampoo and conditioner for her show dogs. I happened to have that on hand as I used to use it myself. Zoe's had 2 baths in 3 weeks, though one was due to a little
(possible TMI warning) incident of poop sticking to her butt. Now she's looking a little greasy, she bites her back legs/tail a bit (though we don't believe it's allergies, at least not yet), and the vet even noticed that she's a bit dry near her rear (though it could have been due to me not rinsing the shampoo off completely).
I've been using that human shampoo/conditioner and baby shampoo for her eyes. I'm thinking that it's probably best to switch shampoo/conditioner though. I've read various things about Ph levels and the difference between using dog products and human products, nothing seems for sure though, but if I'm going to switch I may as well use dog products.
Zoe's still a puppy, just shy of 4 months old. So she has her puppy coat, and I don't know what adult coat type she'll have. She gets brushed daily and so far we haven't had an issue with tangles but anything's possible. That said I'm looking for suggestions on what products to use for her.
Thanks!
-Vicky and Zoe