A 3 month old jax will not have as hard a time as the commonly sold babies of just a few weeks. They will dehydrate less and have more body reserves. LLL has a pretty good reputation and should be able to get him to you OK, but check their info on how they box and what shipper they use. Find out where the shipper depot is in your area (its often quicker/safer to go pick it up directly...no long truck drive), call the receiving office and make sure they are expecting your cham. I find if I act worried (but not rude) and cautious they are more likely to care that my live animal gets to me. Make sure they can contact you in case there is a delay or a problem. Also, LLL should refuse to ship if the weather in any connecting hub cities looks bad. Find out where the box will need to transfer just in case. Chams in boxes tend to sleep regardless of their age. Usually the cham can be packed in a plastic deli cup with an anchored twig to grasp and damp paper towel in the cup for humidity. The box should have a heat pack taped to the side or top, not loose. Insulation in the box such as a styrofoam liner. Marked on the outside with "Live Harmless (or Nonvenomous) Reptile" and the temp range for the package. Actually, shipping an adult can be harder as they are much larger and have more "experience" about life. As for feeders, check with LLL to see what he's used to. Small crix, houseflies, and fruitflies (the larger species hydei) should work. Good luck!