Jullessy how little is Lestat? I am going to assume very small, still on pinkies?
Now you did say it has been almost a month that he has not eaten and if he is as small as I am guessing he will be due to shed soon, which will likely throw him off feeding. Some times it is hard to tell if they are going into shed but here is a basic run down on the whole shed process to help you out. The initial stage, when they often refuse food(if it happens to be feeding time & shed time) you may not see a difference. Then the skin starts to look different, but on some morphs it may be hard to tell, our R.O. barely looks different at all, most people can not tell she is in shed. Next the eyes "blue" or cloud over, again different amounts of clouding, more noticeable with some than others. Next the eyes will clear, then with in a few days to a week or so, they will shed.
So it is quite the process, and depending on the age of your snake, it take more or less time for the whole process. Give your dude a break, leave the snake alone, no handling for at least 4 days, just in case it is feeling stressed and keep looking at it for signs of the shed process. If it is in shed, then do not attempt another feed until your snake sheds. Some will eat in shed( but sometimes it can cause regurgitation), some won't and if yours shows to be in shed in the next few days, then you know yours won't eat in shed.
If after 4-5 days of no handling, no feeding attempts and just checking to see if there are any signs of shedding, your snake does not shed, then I would use a small feeding container, heat the pinky with the hottest water you tap will give, dip it in tuna juice, brain it(cut it's head open and all the way down the back) and then with Lestat in the small container, first try a very slow moving tease feed. Gently put the pinky right in front of his face, even touch the oozing brain matter on his nose so that when he flicks he gets a taste, then hold it there. If he does not take it from you in say 30 seconds or just slithers away, then leave it in the container with him and close it up tight (remember to be sure you have air holes). Do not disturb for at least 30 min, if it is still not gone put the entire feeding container in the viv and leave closed in viv over night.
This helped for mammaAS
http://www.cornsnakes.com/forums/showthread.php?t=85995&page=2 hopefully it will help you out as well.
Tisha