Welcome to Justanswer! I am Dr. Altman and happy to assist you both today!
I am so sorry no one has assisted you and Kobe yet today and he is not feeling well.
First we need to determine if the wobbliness is weakness or pain related. As long as his gums are nice and pink and moist, he is not warm to the touch, abdomen is not swollen and is able to rest comfortably we can focus on possible pain related or neurologic changes. Often when pain or neurologically related they are hunched back, tail tucked, hesitating to go up and down steps or on/ off furniture. The fact that he is eating well and defecating normally leans me more towards this likelihood as well.
Ideal is to have your veterinarian evaluate your dog to definitively diagnose the problem and start on appropriate medication to control the discomfort if there is any. Until you are able to do this please restrict activity (which often they are already doing themselves but that means no steps/ stairs and assisting when going out to go potty) and rotating warm and cool compresses on the back in ten minute intervals to reduce pain and increase blood flow.
You can also do light circular massage up and down the back to stimulate blood flow if this is not too painful and will allow it.
To pick your dog up into the car or up/ down steps please use a towel in the groin to support him and minimize further injury.
Please let me know if you have any additional questions I can assist with. I hope you are able to get him comfortable soon, truly.
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