For me the speed of the drone was ok, I replayed some of Hollow Knight, I think that your character falls too quickly, and he has no too much of air control. For example, in Hollow Knight, when I press a longer jump button, I can fully move in the air, and the character doesn't fall quickly, so I have time to do the perfect landing on the platform that I aimed.
I know that it is not easy at all to find the perfect formula, I bet that the developers of Hollow Knight spent many hours on this element.
Feel free to ask more questions if you want more detail.