Barnevelder, 2 weeks old,
Unsteady on feet, falling to one side. Weak chirping. Lethargic.
A couple of the others look a little unsteady on their feet
Vit B, Molasses, water, warmth, fresh Oregano, crushed garlic, apple cider vinegar in water.
No, they don’t. A couple are resting with their wings out.
The heat plate is 54C? That translates to 129.2 FThe heat plate is 54°C at the plate.
Are the chicks using that at all? I realize you have raised a lot of chicks, but the plate sounds too hot to me.
Two things come to mind with the description of your symptoms - either the chicks are overheated or at 2 wks old it's possible they are suffering from Coccidiosis overload.
I also realize and did read that you are using a medicated feed, but that is not a cure all especially if you have an outbreak. Generally the amount of Coccidiostat in feed is very small.
Turn down or raise the heat plate - get the chicks hydrated and see if that makes a marked difference over the course of a few hours. If not, I would treat for Coccidiosis.
Do you have Amprolium available at your local feed store?
I also agree about eliminating everything from the water at this time. Maybe some Nutri-Drench or sugar water to see if they perk up.