Help with making a non-humanoid avatar

I have been trying to get this Novaraptor model I found for VRChat to work correctly. But, I am basically learning from scratch. I seem to have gotten forward movement animation working and crouching somewhat working for PC. But in VR there is no head or hand tracking, as well as the crouching seeming to be very low down.

One of the dinosaur models I have has blended crouching so it moves down as the headset goes down. I dont know how you would go about doing this.

I do also need to learn how to animate backward movement and strafe movement. Is anyone able to give me some advice in how to get tracking working and how to work the blend trees?