Curing it take awhile, but that seems a bit extreme, Are they on a Screen or what ? Keeping air under the curing buds will help her dry, If you put them in a jar just make sure to keep the lid loose and check them several times a day to keep moving them. the 75 is a bit hot even with low humidity try to get the temps down 5 degrees and keep the RH low 55 should be okay. I am curing at 60 RH and 70 temps and about 10 days and I jar them and keep moving in jar until your stems are not bendy. LOL is that a word ?
Aluminum foil over the top on a screen loosely will help slow down you curing process, The longer it takes the better taste. Well that's what I have found to be the case.
Temps and Humidity go hand in hand, Higher temps hold more moisture,. lower temps less moisture. IMO only. the lower temps cure much better than being to hot.
Good luck with your Curing Process. OH BTW. Welcome to RIU