Update

Well, things have been happening!

The blood test showed as nothing to worry about. The liver is back to perfectly normal, the kidney values and white blood cells only very slightly low.

However, Troy still wasn't eating. He's actually only lost about 4 kg (compared to last year when he was 62kg), so not as much as I thought. But nonetheless he wasn't eating properly. So on Friday, he was give an anabolic steroid and an appetite stimulant injection. And touch wood, he has been eating properly since Saturday morning. In fact, yesterday and today (Wednesday and Friday) he has eaten the whole amount (two trays each meal time) without problem! I hope it stays that way and once he is back into a good eating routine, I will slowly swap him back to kibble - the wet food is extremely expensive and I will pay it of course if that's what keeps him eating, but if I can get him back to kibble, that'll be a bonus.

He also seems to have more energy again, probably due to consuming an adequate amount of calories again now.