Yes, can you please list your
UVB light? It will say right on the bulb or tube what it is as far as the brand, the wattage or strength (T8 or T5), and whether it is a regular compact bulb, a coil/spiral bulb, or a long tube in a long, flurescent tube fixture...And also, is it being obstructed by anything, such as the mesh lid of the tank, or if it's a long tube does it have a clear plastic cover on it that is obstructing the tube?
It sounds like inadequate UVB/UVA light, as a 2 month old beardie should be eating tons of live insects every single day. By the way, please never, ever feed him any freeze-dried insects, no mealworms at all, especially mealworms, as they are nothing but fat and hard chitlin shells that they have incredible trouble digesting and they can cause serious bowel impactions and obstructions. Most Bearded Dragons that are under a year old will not even eat many, if any greens or veggies either, they typically only eat live insects, which should be gut-loaded with the healthy greens and veggies that you try to feed him. The live insects should be smaller than the space between his eyes to prevent choking and bowel impaction, and freeze-dried insects have no nutritional value, they cause impaction and dehydration (Bearded dragons get most all of their
hydration from the live insects that they eat and from the greens/veggies they eat when they are over a year old, they typically don't drink standing water, as they are from the Australian Desert and have no concept of it), so freeze-dried insects are extremely bad for them. Also, rarely do they eat any type of pellets or commercial foods.
They do most all of their growing and developing during their first year of life, and as such they eat pretty much nothing but live insect protein daily. He should be eating on average between 40-60 appropriately sized live insects every single day up to about 8 months old, then it starts to subside. There are of course variations in this number, but that's on average. When they are not getting at least 13-14 hours of adequate, strong
UVB light from a strong, long UVB tube or have a proper temperature gradient within their tanks, they lose their appetites and become lethargic...