Weight loss percentage + Feeding

[SRMD]

I wouldn't worry about the weight loss. Its only 2g and your snake sounds healthy. For the feeding schedule it sounds to me like once a month is a little long. I would continue to try 2-3 weeks until he is consistent. If not maybe try a medium rat once a month if you can't get him to feed every 2 weeks. He should be able to take a medium rat.

Small rat's are around 100-150g..(and they are quite wide) where I live. I'm not sure my BP would accept a medium.
Maybe I will have to try it sometime, Thank you for your reply.