I'm in a very tight situation
Meanwhile, try to understand why you got into this situation. When it comes to studying the average person's problem is that they procrastinate most of the time. It is very difficult to stay focused if there are already numerous distractions (home, parents, roommates, cell phone, etc.) let alone allow the mind to digress.
In addition to this, numerous critical issues can arise in life that are not debatable. When this happens, there is little that can be done about it. But to calm the mind and stop procrastinating, one must be focused on one's goal. Why one has chosen a particular academic path is foundational. You need to know
why you are doing it. Starting from there, studying should not become a tedious obligation, but a means to get to your life/carrier goal or to increase your knowledge.
You must organize your study in a methodical way. If you decide to study 2 hours a day, you have to make sure that you are really going to study two hours a day and that everything else will be left out of this time period you have carved out for yourself. If for some reason you cannot reach the two hours in a given day, then adjust your study and reduce the time frame, but in that restricted time, make sure you devote all your efforts to studying. All distractions must be eliminated.
In this particular case, what I can advise you is to focus on studying the most important chapters. Figure out how many pages you have to study and spread them congruently over ten days. Leave the last few days for general review. The day before the exam, intuitively pick one chapter and go over it thoroughly.
Try not to worry too much about how the exam will go, otherwise you end up constantly thinking only about it instead of studying.
Finally, you can help yourself spiritually by going into a trance and repeating many dozens of times that you are completely able to cope with the study and pass the exam in the best and most positive way for you.