That's not enough. You need to be feeding him as many crickets as he will eat in 10 minutes, twice a day. Sometimes he will eat 60-70 crickets! They are expensive little buggers. You can also buy roaches. Check out the "for sale" section of the site, and the "feeders" section.
That tank looks like a 10 gallon. If so, it's too small. You need at least a 20 gallon long tank for a baby. Then, when he grows you need at least a 40 gallon breeder tank.
You don't need to alter the light- just get another basking rock or log that gets closer to the light. What are the temps? They should be 110 in the basking spot, 90-95 in the warm side, and 75-80 on the cool side.
Also, the best
UVB light is ReptiSun 10.0, not the Zilla T8, though yours is ok for now. When it goes bad, go ahead and buy a ReptiSun instead of another Zilla.