How brilliant to come here and get advice!! You have seen the backlash of using brute force on a clueless puppy, which always serves to further tangle up a tangly problem.
Dobebug, Kaloric, 4x4, etc al, much good advice here. Stick around and keep asking questions, they have about 1,000 years of training experience (she ducks...). John, I’m adding a word , in red, to this quote of yours just to clarify for the OP, quite possibly a newbie to puppy training:
“Over the years, with the exception of SSA (something not for this discussion) I have never had an ADULT
Dobe who would not mind me, 100% of the time.”
Also, for the OP, a dog who minds an extremely high percentage of the time is a dog who has LEARNED how humans want them to behave. That just takes a lot of excellent communication (AKA effective training ), persistence, and many many many many short 5-10 minute training sessions over the first year of a puppy’s life.
Nothing is more important to peaceful coexistence with your wonderful puppy than understanding that training takes place gradually over time and requires a lot of patience and understanding about how all animals, including humans, learn. Any time you resort to overpowering your puppy, you have, in all likelihood, made a problem much much worse and/or added several other problems.
I strongly recommend that you get a fantastic book called, “The Other End of the Leash”, by Patricia McConnell. It will explain many things that you’re going to run into over the next year with your puppy and help you to understand why those various problems arise and a lot about what to do to fix them. It’s cheap and hard to put down - sort like explaining how magic works but it explains how dogs work!
Please please PLEASE check around locally for puppy obedience classes and start as soon as possible on your part of puppy ownership - learning how to train your puppy. Just like cooking, driving a car, doing your job, etc., you weren’t born knowing how to train a puppy. Learning how to do that is pretty easy and lots of fun but right now, you don’t know what you don’t know. You are just starting an amazingly and wonderful journey of training together with your Doberman. You will soon be hooked on it! These are brilliantly smart dogs and so so much fun to train.
A HUGE wealth of free and great training videos are online at Kikopup’s Youtube channel. She has a video on just about every single problem you could possibly encounter with the puppy. Her training methods are spot on and you can be quickly successful if you just watch each video several times in between training. Go back to a video to see if you need to refine your training to be closer to what she is showing. Emily has put an amazing resource out there.
Come here and ask questions anytime!!
And....WHERE ARE THE PHOTOS???