Help Simba recover from pneumonia.

Hi my name is Helen, and this last two days have been a totally nightmare when my fur baby Simba lost consciousness and collapsed on his walk. He has been a healthy boy and is only 4 years old. He is the friendliest dog and a playful little ball of sunshine. With no other medical histories he suddenly has fallen to his worst. He woke up to being completely frozen unable to move and having difficulty breathing. After taking Simba to the ER they had told us that he has what seems to be a aspirated pneumonia and has lack of oxygen. Unfortunately due to the high amount in costs for treatment I had to take him home instead of leaving him at the hospital as recommended for 48 hours for iv therapy/ antibiotics and oxygen. He has been home now and struggling to eat or breathe. At this point his only option will be to go back to the hospital and get treated before his condition gets worse. I am not one to ever ask for help or money, but this is my fur baby and I can’t even imagine life without him. If you have any pets and know the struggles I hope you can help in any way you can. Thank you for even taking the time to read this.