I'm not quite sure. Do you mean 2 exercises after squats?
Regardless, since you've had trouble forcing yourself to do the squats then str8 legs, just start with a load that you can handle. Then progress after that.
On my front squat day, I front squat, romanian deadlift and use the glute ham raise to finish it off. Not a lot of volume but the quality of the exercises are great and I balance it so I can still work hard through out the week with out burning out.
So just find a volume of lift that are efficient and effective and a volume that you can handle.
Just keep squatting first and foremost.