Once you get home, take another hour or two to study. Depending on your stamina, you may be a bit tired, so, instead of starting a new topic, this study session might be better spent reinforcing what you've already learned. For example, if you studied ratio questions in the morning and reviewed them during lunch, the evening may be a good time to work through several high-value ratio practice problems. Once you get tired, stop studying and relax. It makes no sense to study when you’re too tired to retain information.
Cut Out Unnecessary Stuff in Your Life
We can't change the fact that there are only 24 hours in a day, nor can we change the fact that proper sleep is critical to health and well being. If we assume 8 hours of sleep a night, we have roughly 16 hours of awake time. To fit in study sessions, you'll likely need to place a number of activities and tasks on hold, or at least until you're done preparing. For example, dinners and happy hours and ski trips and movies and Netflix are all enjoyable activities, but they're time-consuming. Let your close friends know that you're preparing for the GAT and that you'll be missing in action for a few months. Keep in mind that the sacrifices you're making are temporary, but a top GMAT score and a degree from a strong business school are assets that pay dividends for a lifetime. A little sacrifice now will go a long way in the future.