Hi there,
We would be happy to help you out with some advice. What you are experiencing is totally normal -- so don't fret! The more you can practice taking CATS/sim tests the more you will become used to the timing. You may want to check out our blog post on how to relax while taking the GMAT:
https://gmat.economist.com/blog/test-tak ... aking-gmatIn terms of pacing, for most people, 10%-15% of their errors are avoidable. Eventually, once the knowledge is in you and you know what to check without asking yourself the same questions each time, you will be able to notice rather than have to pause. But for now, train yourself to read carefully, to identify the question properly, and to notice the small differences among answer choices. (For example, why do "b" and "c" both sound good, and what is the difference between them-- because one is wrong?)
A slight pause and self-reminder to slow down may help you. It is OK to be pressed for time, however, looking at the clock after every question will not help. Nor does it help to rush through things. For now, simply try to remind yourself of what knowledge you are supposed to apply, and what you are supposed to check/identify. Focus on attacking the questions in as systematic manner as possible.
I hope this helps!
-Liz