Hi,

There is no such thing as proper timetable for preparation of anything. It needs changes from time to time and as I don't know your proper timings such as waking up, your meals and sleep time, I won't be able to create your timetable but I can guide you to create one yourself. So, waking up early is the best thing you will do to yourself, as early in the morning when your mind is fresh you can easily learn things and memorize them as there is silence all around. Make sure to have 3-4 hours to study in the  morning followed by a break where you can either have your meal or take a nap for an hour. After that you should continue your studies for another 2 hours and then take a break. Taking a break is very important for your mind and body. You should have a 2 hour study session followed by 15-30 mins break and then yu should revise what you did the whole day at night. Also don't forget to have a good sleep as it is very important.

I hope this helps,

All the best.