It's been four days since getting him back from the vet. It's difficult to tell on progress, because it's not a simple infection where antibiotics fight it and that's it.
Anyway, Sometimes he's completely mad (right now he's chatting away to another budgie), and other times he's completely asleep. It's more obvious when he's trying to catch a nap and other budgies want to play. BUT he is still interacting, and talking in the mirror etc. so that's good.
What I have noticed is that today he has been a bit of a piggy (seen him eating a lot more than he has in the last week). I'm hoping this means his weight and strength goes up.
As far as droppings go, it's difficult to tell because he is eating more vegetables now. They can be watery, but they're no longer 100% water with a bit of poop in them.
I've been giving him the supplements via sprinkling them on a bit of millet (it's not a 'required' dosage, so if he doesn't have all of it then it's not an issue). At first it was a great success, but as the days have gone by the other budgies are getting jealous of him getting his own personal piece of millet
PLUS he's now getting a bit wise to something tasting different and keeps using distraction tactics to get other bits of millet instead (basically he's outsmarting me). It may mean that I have to start mixing it with water and using a drop form a syringe. If anybody has any better ideas PLEASE let me know.
Diet-wise he's only allowed the small piece of millet I give him. Other than that they've been getting vegetables (as above, he is eating them) and I've sprinkled a load of the pellets mashed up onto their normal mix. I've put more on today and they looked slightly apprehensive, but now some of it's moved they've been eating away. I'm hoping to gradually cake the stuff on their food until they're properly ingesting it and then start to replace it with the full ones.