Hello Shailendra Tripathi,

Firstly, you are doing a wonderful and a daring task but sustaining your life plus also moving forward in your studies.

Since you have not mentioned the exam for which you are preparing it is a bit difficult to provide you with the time- table, but I'll give you some basic points which I am sure will help you.

Most importantly each person has a different time schedule or body clock which their body has adapted, so you need to go according to that clock. If you are a morning person then get up early like 2 hours before going to your job and while doing some basic chores keep studying.

Make short notes and sticky notes which help you in reminding the crisp and most important points. Stick these on the walls and other surfaces where each time you pass that place you look and remember.

While at your job try to revise very short facts whose list you should maintain.

Use your phone in an appropriate manner as it can be a great tool. Keep notes of small facts  and figures.

Try to do as much as possible previous year papers and mock tests.

Analyze these tests and identify your weak points and work upon them.

HOPE THIS HELPS