Feeding help needed BADLY

[Bogertophis]

If you're talking about your one snake then yes, plenty of snakes do fine starting in larger enclosures. But when a young BP isn't eating and is extremely defensive switching to a smaller enclosure often helps.

What works for one animal doesn't work for others. So trying to remedy the situation makes more sense than not. The current setup clearly is not working.

Also, the OP stated that maintaining the temps. has been a problem, & that is much harder in a huge (65 gal.) tank for a BP.