Nothing is better than having a fat and happy axolotl! In the future, though, if you feel like a worm might be too much of a bite for your axie, just try cutting the little bugger into smaller bites.
It takes a little longer to feed them, but it's worth it if it means they can eat a bit easier. Trust me, you don't want your axie to regurgitate a worm. Such a bad smell, and god help you if it gets stuck in a plant.