How would one slow down time for a single Rigidbody2D?

So i have found this one method to slow down a Rigidbody2D it required me to scale the velocities and mass by a factor (timescale) though this does not result in the same physics effect to happen (Without the timescale effected, a ball bounces a certain amount of times, though when the timescale has been lowered the ball bounces less).

What other ways are there to slow down a single Rigidbody2D?

What you are doing is correct, just that you would have to lower the gravity too, for example if the time is halfed cut the gravity by half too