Just a guess, as you didn't state your humidity level. I would increase your grow rooms relative humidity. Bet that sorts it out for you. I would do that first. Nothing else, just that. Then wait a few days. You should be running with a rh of 70-75% at the temps you've stated. And some plants dont care as much and grow well as long as it's close enough. But some strains begin having transpiration issues as soon as you drift out of the ideal humidity range.
Increase your grow rooms humidity. Bet that sorts it out for you. I would do that first. Nothing else, just that. Then wait a few days. You should be running with a rh of 70-75% at the temps you've stated.