Hi there,
It's actually quite common for the second CAT score to be equal to or lower than the first, especially if timing was an issue. Before you start studying, you are likely to take a relaxed approach in which you answer the questions you understand and move on when the question covers something you're unsure about. This is
always a good strategy, but as you study more, you may start to feel that you should be able to get every question. This can lead to serious timing trouble, and it may also cause you to burn out by the end of the test. It's important to let go when a question isn't going well.
In your case, it looks like Quant did improve fairly significantly, so I'm guessing timing didn't kill you there. However, the distraction you mentioned may have coupled with pure exhaustion to pull your score down. Can you see where your verbal fell down? Was it in all 3 topics? Was it throughout the test or at the end? If you can identify the problem, it will be easier to troubleshoot. You may need to work on your endurance, especially if you haven't yet started to include the essay and IR sections in your practice tests. Also, many students find that their Verbal scores are not as consistent as their Quant scores. The best thing you can do to ensure a strong Verbal performance is to develop a solid, consistent technique. Review
every problem you do and ask yourself "Why is each of these choices right or wrong?"
In the meantime, remind yourself that you
are improving in Quant. If you had been able to repeat your verbal performance from last time, you would have scored around 630, which is halfway to your goal zone.