That is where it should stay. Humidity should stay at 80%. This will allow for easier shedding. You should only dust with a mutivitamin once or twice a week and not at the same time as the calcium dust because iyour frog won't receive the full benefit from either if given at the same time. Calcium dust should be every other feeding and the multivitamin once or twice a week preferably in between the calcium dustings first day of the week so you can keep track easier. Make a schedule like that. Offer a variety of foods during this period of rapid growth as the frog will benefit highly from different nutritional sources. Chunks of night crawler/red wigglers/horn worms/ext. All good.