I remember when mine was that size they grow fast... Hmm food beef heart, any veggie with some vitamin d3 or calcium... What you feed him now is what he will gain a preference too in the future... Id start getting some market shrimp no shells until he is bigger... Feeders should be a treat. give him some sort of turtle pellet as a staple but dont feed him that everyday, change it up daily like meat,veg,pellet... I give mine a frozen feeder mouse at the end of the month as a treat... Oh yeah if he is shy put him in a room where he will see people more often, they love watching the outside of their tank more and more as they get older and smarter. Im sure i can think of more things.. If you have any more questions or wanna know anything about them ask me ive had mine for about 1.5 years love him to death. My guys a florida snapper care is pretty much the same except temperature....