My beardie is a female, 240 grams, and roughly 8 months old and lives in a 20 gallon tank. It doesn't look like she's grown in a while and I'm concerned because every other beardie I've seen is huge compared to her and shes almost an adult. I feed her as many veggies as she can eat in one sitting once per day and give her 10 medium dubia roaches once per day as well. Could this not be enough food??