I see to add 4 oz per gallon of water but it says for rapid response feed directly in mouth - does that mean concentrated as it comes out of the bottle or diluted?
Could you post a picture or video of your gosling? If she is not eating or drinking, she will need to be taken to a vet or she will die. They can't go long without water.
she is standing up (although very wobbly) and making faint chirping noises.. I gave her a tiny amount of the nutri drench a min ago but she doesn't want anything to do with drinking