The links and info that yorkietalkjilly gave you will help you so so much.I agree, even though she is eating well right now, it is great that you have nutrical on hand. If she doesn't eat every 2 hours or so, bam! blood sugar can drop. You have obviously been doing your homework. What a great mom!
Tell DH that she will be telling your boxer what-for soon. I have a 70 lb sheltie mix that is pretty much controlled by my 5 lb yorkie lol