I never mist my GTPS and I never had a shedding problem. Humidity and heat are increasing bacteria and virus development. Check your temperatures. Are 84°F on the hotspot? Don’t go below 78 on the coldspot. Regurgitation can lead to a respiratory infection. So check daily if you hear your snake breathing or if you see any bubble on his mouth. If so drive him to the vet. Don’t give him any food for 2 more weeks. Wait until he is in chasing mode. Give him a smaller prey than usual. At 6 months, it should still eat pinkies or small fuzzies. Too big preys can cause regurgitation.