Anchor Point Sliding

Many times I find myself wanting to move an anchor point on a curved path to a different part of it without affecting my current curvature, but it’s just not possible so I have to redraw the curve every time, which could be a little frustrating at times.

It would be very helpful to have an anchor point sliding function in Illustrator where the handle tangents of the sliding anchor point adjust based on how close or far it is from the anchor point before and after it, like in 3D softwares. I hope it makes sense.