Hello. I’m sorry to hear how unwell Douglas is at the present time. I know just how you are feeling. My dog started to become unwell at 7 months old, he was losing his fur and he had a constant upset stomach. I spent many hours sitting with him, trying to get him to stop licking and pulling at his fur, whilst crying my eyes out. He is my first dog and friends & family told me I was imagining things and his first vet told me he had “puppy itches”. So I moved vets and saw a couple of really lovely vets who ran a series of tests on him, ending up with the allergy blood test. The results of this were a game changer as he not only has food allergies but also environmental ones. We’ve learnt to cope with these, things aren’t perfect....he’s allergic to dust mites and storage mites, to name a few! But without the allergy blood test, I’d never have guessed he was allergic to these along with some food. So, if you can get the allergy blood test done, I would thoroughly recommend it. It may not give perfect results but it will be a fantastic starting point for you and Douglas. Good luck and don’t give up.