A small drop of mineral oil on a feeder might get things "moving". I think a lot of people have had some success with that method. Do some searching here on the forum for mineral oil.
For general intestinal health and to prevent future issues, I would recommend definitely feeding earlier in the day, making sure his basking temp is correct (important for digestion) make sure he has access to plenty of water, give him extra warm mistings, and rotate in juicy bugs (silkworms and hornworms) regularly with the crunchy ones. Lighten up on the mealworms, or substitute them entirely for superworms.
I hope your little guy leaves you a giant "present" soon.
Have you had a chance to look at the care sheets here? They have a lot of great info that might help with the basics, as well.