Hey Gro so if you can stay at the 50s range that can work, especially with good ventilation. Keep the air moving around the buds the best you can. I think having a dehumidifier around is always good...i think around this time i see em on sale/clearance at the local target for like 10-25 bucks, not bad price for a back up solution.
I feel like i hear lower H levels can help with either terpene or trichrome productions...so one way or another less H during flowering is better than too much.
Dont give up and keep the air flowing, ive learned cannabis is one tough ass plant and can battle a lot of problems. ✌️💚