at her age she's not going to get obese. she's using all her food for growing. :) since she is eating quite a lot of them right now i might alternate between those and mealworms, every other day for now though. or you might fill her dish with phoenix worms and let her have as many as she wants in 10-15 minutes and after that take them out and replace with mealworms. i gotta say, 30 seems like a lot, even though they are little so at least for tonight, since this is her first time having them i might only give her a few more so she doesn't just keep eating them because they are new and exciting or something.