I only raise the humidity when going into shed. Aside from 2x a day mistings I haven't kept humidity up and i have done this for more than 8 years with no ill effects. This works for me. I find alot of the must do husbandry is not always accurate and just info that's passed on. All species require different care and you will find what works for you but i wouldn't worry too much about humidity at 60f..