Poor thing, he was swallowing so much he made a huge burp from all the air in his tummy
So I told my mom and she said to give him diluted apple cider vinegar and after googling it first of course
I gave him a few drops on my finger (even though he wanted nothing to do with it) and he instantly stopped swallowing! Finally at 3:30am he was able to pass out
Also I read about giving dogs apple cider vinegar and it looks super healthy for them
Apple Cider Vinegar - A Holistic Remedy for Dogs - Whole Dog Journal Article