Please help Zacky

We found Zack about a year ago (2020), as a rescue but he has been struggling with mini seizures ever since, the vet bills are mounting up and we can’t help him without a scan and multiple test, which we can afford.
He means the world to me and I’ve taken out loans to try cover costs to help him, I can’t afford to lose him, but I can’t afford to keep building dept either.. he’s not even a full year old yet.

All I’m asking is for the amount needed to cover his scan to find out what exactly is wrong.