Feed mine once daily, one day a week I fast. I normally leave either spinach or kale on veggie clips, nuked in the micro for about 30 seconds to soften it up somewhat. They also get cichlid floating pellets and Hikari jumbo carnisticks. Once to twice a week live crickets and/or giant meal worms, they go nuts over these, best to keep as a treat. Fruit is cut up & given raw, as they grow the size of the fruit can increase, looking at yours I think it will be able to eat a whole strawberry or cherrie tomato. Frozen peas, carrots, broccoli, I cook for about 3 mins in micro, and feed in bite sized chunks. Obviously not all of this every day, I feed what we have in the house at the time
If yours hasn't been fed fruit or veg, it may take a while for it to get used to it. I have found them very undemanding in terms of diet they eat pretty much everything.