I'll contact the vet in the morning.What is her temperature?
She really should have been fed a colostrum replacer; not a colostrum supplement
Don't know much about the Manna pro, but some of the other replacers from TSC are soy based. You don't want that either.
You will need to contact your vet ASAP. Talk to your vet about possibly boosting her immune system with other vitamins and minerals and in the meantime I'd see if you can pull some hair for the G6S testing and go from there. If she is negative or a carrier you might be able to work with her and get her healthy. If she is affected/positive she simply won't live. Hoping that is not the case. I don't think there is an age requirement for G6S testing but I'm not sure.
I hate to say this, but if she doesn't make it you should consider taking her to Rollins lab for a necropsy.
Right now it is hard to say what exactly her issue is without seeing her etc.
How is she acting otherwise?
For reference our 10 day old Nubians are eating 16oz 3x a day. Sometimes more than that cause they get to sneak off of their dam too. Right now your doelings intake is less than a newborn Nigerian kid Really hoping you can get her turned around.