Pictures of the setup, As the not eating is due to how you have it setup. at 3 months old they should be in a max 10g tank with lots of cover and hiding spots
With a 88-90 warm side and 78-80 cool side with Ambient air temp of about 79.
Constant gawking, poking and prodding will only push the not eating longer.
Im sure the breeder was feeding live, so do that as well. Only ONCE it starts eating good then can you handle it few times a week but not everyday