I belive there is an option to set/bind your thrusters to only give thrust while the key is pressed down and go back to 0 once released, in the option menu under keybindings....
I use a joystick with an aditional thruster controller so I have no use for this myself I belive only people who use mouse/keyboard need this option. I think it's fairly easy to just give a short burst with my throttle if needed and press the rewerse button if I overshoot the landing pad...
There are separate bindings for Flight throttle and Forward/backward thrust (similar to the lateral thrust), if that's what OP is asking. Just check the control settings more thoroughly - there's a lot of stuff, there.