Looks like it’s been several months, how is Jasper doing?
Every pack has a hierarchy. No two pack members are equal. Jasper seems to be confused on the order of your pack. That needs fixing.
Basic Obedience? How’s he doing with Sit, Down, Stay, Come. Heel, Leave It?
One solid benefit of obedience for Jasper is he is reminded (reinforced) that in your relationship you give the commands and he obeys them. Some dogs can be very hard headed about this. I know our dog Dino was a knot head for sure and he was that way from birth.
One thing we have down with all of our dogs and all of our fosters is to handle their bodies. Ears, muzzle, mouth, feet, tail, belly. This is a simple procedure with young pups. Some dogs as they get a bit older and their heads get harder it can be a real challenge. Also very important, rolling the dog over on it’s back and being calm.
With foster litters, every evening both my wife and I would spend five minutes or so with each of the pups. This practice really pays off when, for example, medication needs to be administered.
Clicker Training (Operant Conditioning) A very effective training method. Search for it.
If you have never enrolled in an obedience class with one of your dogs I expect you would find it beneficial. I know the very first class I attended with our dog was a real eye opener. Your local humane organization is a good source of information. Frequently they offer obedience classes and their trainers are most likely skilled and experienced.
I will suggest a book; Search “ Ray McSoley, Dog Tales” . I learned much from this book and I highly recommend it.
Another book recommended; How To Behave So Your Dog Behaves by Sophia Yin, D.V.M. Dr. Yin is all over operant conditioning.
Best of luck to you and your dog,
Uncle Foster