Diagnose Harley & Pay Medical Bills

Hi everyone! As some of you have seen my posts on Facebook, I got a new puppy on Dec 16th after losing my Bella in Dec 2022. The 2nd day home with the puppy was a nightmare. She was drinking so much water and peeing every 5 mins. I thought that it was strange but just left it up to it was her adjusting and being in a new environment. 3 days in I called the breeder to express my concerns as it just was not sitting right with me and the breeder told me that the dog was "being a pissy, bitchy little brat and you need to have more patience with her". I decided to take her to the vet to make sure she didn't have a UTI and she didn't. She had worms, so I treated her and my other dog. The drinking and peeing continued. On Dec 30th, she didn't play all day just slept, she barely ate and was now having the diarrhea. I worried she had parvovirus so I took her to the emergency vet, she didn't have parvo but they didn't know what was wrong with her and gave her a probiotic. On Jan 4th I took her to my regular vet who has done blood work and now they are running tests on her poop. Her bloodwork came back good for the most part except for some high proteins. Which depending on what the tests on her poop come back is they want to test her for Addison's Disease and then possibly an ultrasound. I have switched her dog food, which has seemed to help a little. She is still not "puppy like" and active like when I first brought her home and still drinking and peeing a lot. Anyone who has pets knows how expensive vets are. Getting a new puppy you don't expect to have issues in the first 3 weeks like this. I need to get a diagnosis on what the issue is and get her feeling better, its horrible to watch her so sad. I will be working as much overtime as I can to pay for all of this, but I'm reaching out to you guys for help. I appreciate any help! Thank you.