Zoë does not like sweaters, fleece, or anything with a hood. So I layer on the cotton and she's happy and warm. Daily, it's a jumpsuit with a preemie tshirt over that. When we go out, I put a cotton sweatshirt and puffy harness vest over what she's already wearing.
With changing her clothes twice daily, she now knows how to stick her head and front paws into the clothing when I hold it infront of her. I need to help her with sticking her hind legs into the jumper.
I suggest you try layering thinner items together
