Toki is absolutely adorable.
Could be genetics. Max is a hair monster, and Teddy has less. They are brothers, but genetically programmed differently.
You could try using Vellus Satin Cream, which is a great leave in conditioner that exhibitors say promotes hair growth. At the very least, it prevents breakage.
The small jar is more than adequate.
Vellus Inc. - Vellus Satin Cream