well, that vet doesn't seem very reputable vet after force feeding an adult thats only been having feeding problems for 3 weeks. Adults just don't eat as much as juviniles do. two mice in three weeks is a little less than what he should eat, and may be cause for a little worry, but as was stated above, adult males often go off their feed during the breeding season...its perfectly normal. Some will go for as long as 2 months or maybe more because their sexual appetite is out weighing their desire to eat. He should bounce back. I wouldn't have suggested going as far as a uvb light. Those can be very expensive (sometimes upwards of $50+ per bulb as I'm sure you know now), and though they are beneficial to alot of reptiles, ther aren't necessary for corns. It may help to have a small wattage uva light, such as a sun glo bulb. They produce uva wavelengths that help to stimulate appetite and promote natural activity in a lot of animals so it may help in your case. Just make sure the temps in your viv are not to high, and that there is a cool spot he can thermoregulate to. Temps can make a difference in a lot of cases. If it is too cold, your corn may not be eating because temps are not high enough to digest his food peroperly. If the root of your problem is an infection, higher temps ( around 85-88 on the hot side) may produce an artificial "fever" to help fight off any infection. Remember though that corns are not high temp snakes, so exposing him to higher than average temps can do more harm than good. Corns are use to a temp gradient of about 78-82 during the day and about 74-77 at night, with a heat pad so that they can thermoregulate their own temps (when it comes to their comfort, they're the experts, not us).
Since you already have the bulb, I would say to raise his temps to about 85 to 88 on his hot side for about a week (remember it is important to still keep one side cooler. 80 should be fine) and continue offering meals. Sometimes a fine mist of water may help stimulate appetite by slightly raising humidity. Continue to offer him meals. If it starts to get towards the 2 month mark and his feedings still aren't back to normal, a bacterial culture and stool samples should be taken by the vet because whats affecting him is probably internal.
Bulk mice in higher amounts can be very cost effective and very convenient even if you have only one snake. If they are sealed well, frozen mice can last for up to a very long time.
