He shed last week, and definitely no popping sound before. Well, i'm just worried if it's RI because i live in a tropic country(temp around 30C and humidity 70%) so i dont use heater, and it rained 2 days in a row yesterday so the humidity shoots up to 80% and temp to 26-27C. And my friend's snake got RI because of the drastic weather change just like that.. or i'm just paranoid xD I'll definitely be keeping an eye on him everyday, Thank you