I was scared of the idea of tubefeeding my puppy but I would have done it if mom's hormones wouldnt have kicked in and started nursing.
She is very tiny ,maybe ask the vet if she could show you how to tubefeed. Maybe seeing the actual process in person may ease your fears.It's not the same as when you see an explaination on a monitor and see it live infront of you. If there's anyone who could do this ,it's you
Maybe Pat (yorkierose) can give a better suggestion as to how much to feed her? As I've been reading it's 1cc per oz of bodyweight...so you might be able to try at least 2.5cc I know its way more difficult with a dropper.
Genie