I hope for the best! Sounds so sad, but you being strong may give him a chance.
I have a little guy I adopted. He checked out of the shelter fine, but as soon as we got him home, he wouldn’t eat. We tried different things and tried what the vet advised us to do. Three days and he ate nothing. Became fairly lethargic and barely responsive.
We started force feeding wet/pate cat food and baby food through a syringe. He fought slightly, but ate it and kept it down. Then one day I just happen to be working with some shredded chicken in the kitchen and he came over and meowed at me. I gave him a little and he actively ate it himself. I gave more and more and he ate all that too. I went to the store and grabbed a couple cans of wet shredded chicken cat food, brought it home and served it to him. He ate it up.
It was such a relief to see. That was a year and 5 months ago and he’s doing amazing. He still meows at me when I’m in the kitchen at lunchtime because he wants a little bowl of his chicken shreds, as that time of day is when I usually made it up for him when he was a kitten.
I’ve had the Eros E3.5s for a few years and they’ve not let me down on quality, especially at the price point.
I also considered those Mackie’s.