I've been having the feed my Whites Tree Frog using a liquid carnivore care product. The vet gave me a small syringe with no needle and told me to use it to open her mouth and then inject. It's a very stressful process, and not only that but now she is developing a sore on the spot where I'm having to pry her mouth open. Does anyone know a less invasive way of getting their mouths open? I have to do this twice a day until she starts eating again, and I feel the stress of the process is just delaying her trying to hunt. Experiences would be much appreciated.