I'd add what kind of tank/cage is he in? Is it covered on several sides like a PVC enclosure or with cardboard if it's a glass tank? If not, that might help him feel secure.
Additionally, how are you taking temps (thermometer, IR Temp Gun, etc.)? You want the ground temps taken with an IR temp gun.
Generally, wandering around at night could mean looking for food. However, lack of security and temps too high can lead to that as well. If it's during the day, it's more concerning.
I agree that he should be pretty settled by now.
How big is he (weight) and what is he eating (type of prey and size)? If not sure of weight, does the food item leave a noticeable bulge or it is just right or you don't notice it at all after he eats? Also, how often is he eating?
Please answer the questions as best you can. Snakes do like to squeeze into tight places and can be curious about exploring, but I would want to rule out everything else first, before assuming all is fine.