Hi there
To address the prep part of your question, I have had some students in similar situations as you. Here are some things I have tried with them. See if any of these works for you. I've also addressed some things specific to your situation.
- Instead of long study sessions, break your practice into shorter intervals (e.g., 20–25 minutes) followed by 5-minute breaks. This can help prevent the buildup of brain fog.
- While the GMAT enforces strict timing, during practice, allow yourself a bit of leeway. Track how much extra time you need on average and gradually work toward more efficient processing. The GMAt will most certainly grant you extra time once they process your accommodation request.
- For Reading, since some days you benefit from audio and other days from visual reading, experiment with using text-to-speech tools during practice to see if that consistently helps you comprehend passages better.
- Try to develop a quick mental summary for each paragraph. This “passage mapping” can help reinforce retention without slowing you down with heavy note-taking.
- See if short mindfulness or deep-breathing exercises between practice sets can help reset your focus if you feel your concentration waning. I've seen these to work in most cases.
- After practicing, review incorrect answers—especially those where you overran time—to identify patterns. Recognizing mistakes quickly, as you mentioned, is a strength; use that insight to streamline your process over time
BottomlineIf you still end up with a less-than-stellar GMAT score, don't lose heart yet. Make sure you use the optional essay that every school provides in its application to explain your situation without making it sound as an excuse or a handicap. Life is all about turning adversities into opportunities. Highlight the positive aspects of your profile in the rest of your application, and I'm sure you'll get a fair evaluation by business schools.
Good luck.