Dampening (exponentially limiting) physics object velocity

Hi. I have a spaceship built as a pawn. It is a physics object controlled by thrusters. There was a problem, if I keep the thrusters going, it will reach crazy speed, so I made it clamped the vector size on 6000 via “set physics object velocity” node. It works great, but it just stops accelerating when it hits 6000. I would like it to slowly stop accelerating, from lets say 5000, until it reaches 6000 when it doesn’t accelerate anymore. I cant figure out a way to do that. Im a noob, so sorry if thats a stupid question, I haven’t found anything on the internet that would help. Thanks.