Chad took a single step and immediately collapsed to the floor. It didn't take him long to figure out what the problem was; he was almost completely hollow, so there was no way for his legs to handle his weight or support a human shape.
He was sure that waiting a while longer might be enough to get together enough mass to allow him to walk, but any longer and he'll probably be caught, he needs to get out now.
Thinking as quickly as he can, which honestly isn't much, he tries to think of a solution.
What did he think earlier? Small dog or house cat... maybe that would work? He has more mass now, so maybe a medium-sized dog?
Chad concentrated on his reflection, imagining shaping it into a dog. 'Come on. Dog. Dog. Make me Dog. Not Man, Dog.'
His form slowly started shifting, crumpling together in some places, getting smaller but more solid.
The shape was very vague, so Chad tired to imagine a more specific dog. A doberman came to mind, though he wasn't sure why. Was it his dog? A friend's? He shook his head, looking down and focusing on the image instead. 'Dog. Dog. Me. Dog.'
Looking up at the reflection again, seeing that he looked a lot like a real doberman now, other than being made of fabric.
He tried moving again, noticing that he could more fairly well now, his four legs easily supprting his body, though walking like this would take some getting used to.
Chad looked over at owner again- no, not owner. Master? No, no, Chad shook his head. HE, the man on the bed, Chad forced himself to think of him that way. The man is still asleep, and he looks like he'll stay that way for a while. Chad had time. For now at least.
What next... get out? Try the door or the window? Maybe hide under the bed for a better opportunity?