Help with FPS slide mechanic

Hi

I'm currently trying to replicate different mechanics from different games and right now I'm really looking at the apex legends/titanfall 2 slide mechanic. I'm stuck on trying to get it to change the speed and time left until you stop sliding based on the slope you are on and how long you have been sprinting for(2 seconds inbetween), along with getting it to stay sliding in one direction. (It currently just goes wherever you look).

 public void Sliding()
 {
     playerCollider.height = reducedHeight;
     rb.AddForce(orientation.transform.forward * slideSpeed, ForceMode.VelocityChange);
     cam.fieldOfView = Mathf.Lerp(cam.fieldOfView, slidingfov, slideFovTime * Time.deltaTime);
 }

 void StopSlide()
 {
     cam.fieldOfView = Mathf.Lerp(cam.fieldOfView, normfov, slideFovTime * Time.deltaTime);
     playerCollider.height = originalHeight;
     normfov = 90;
 }

I've only got the base of the code here because I'm really stuck on how to code it, I've tried everything I could possibly think of to do those 2 things. I really appreciate any help I can get