Hi and congrats on your soon to be arrival.
I know there are different thoughts on this for snakes, but for BTS it is usual to feed in the enclosure and you can offer treats in and outside of the enclosure to help build trust.
Most important thing to start is to make sure you have the temps set up right. Have a warm basking end of about 95-100 Fahrenheit during the day with a gradual temp decrease to a cool end of around mid 70s. They need to have this basking temp so they can get their body temp high enough to digest their food so they won't eat well if this is not right.
For the main food, follow this
Diet Chart. A good way I find is to put the food in the enclosure around mid morning or before you leave for work/school (you can put the food bowl up the cool end on a tile or something so it's not too messy) and take out the bowl and any leftover food on the afternoon. That way they can come out to eat when their body temp is right, and if BTS is young and new probably when you are not looking

Also check out this thread on
Feeding your BTS. Leave a small but heavy water bowl in there constantly, this is also where the ceramic tile helps, as before I kept the water bowl on a tile I had problems with mould under the bowl on the substrate and substrate in the bowl.
In the first few weeks it will likely need some time to settle in so it would be a good idea to give it a week or 2 to get used to his new home before you handle, but walk around the enclosure a bit so he can get used to you there. You can try offering by hand small pieces of treats (melon, berries, mushroom) to try and get him to learn that you are not a threat. When it comes to handling, try short periods of 10-15 minutes at first and make sure you
Pick him up safely. Again, treats.
I hope this helps. This is all just suggestions though. Once you bring him home you can see what he does in the first few days or weeks to get a feel for what he's like. If he's curious, you might speed it up. If he hides all the time, he might need more time. Just don't dig him out from his hidey hole though.
Sorry, I didn't mean to go on so much!!

Please post some pics when you get him. Please!
