3 days ago my cat (british shorthair) gave birth to 4 kittens. Today I've noticed that one of the kittens is really weak, not really moving, just slowly berating with her/his mouth open, tried putting her next to mothers nipple and didn't want to drink. I don't know what to do! I am just waiting for vet to open currently its 4:50am cant take her anywhere and the vet opens at 8:00am, what should I do in the meantime? Looked all over the internet and they told me to go to the vet immediately , but I still have to wait 3 hours till the vet opens. please help. Thanks