They shed every couple of weeks for the first 4 months or so then it slows down to once a month until they are about 10months. At that point it typically take longer for them to shed and as adults at around a year they will have a shed going on different parts most of the time. Just make sure they have good humidity and plenty to drink and that should be enough. Rarely a stuck shed will cause an issue with the tip of their tail but that usually indicates an underlying nutritional deficit. When I notice the first signs of a shed I usually throw in at least one extra daily misting over the 2 or so days it takes to complete the shed. Your veild looks good to me! good luck!