Its is enough only if u strongly believe it with a positive attitude and hardwork. Prepare a Standard time table covering both the groups , Maintain Self Discipline and study harder to reach your goal.I suggest that if you are done with ur coaching for both groups U can easily start ur prep. for else or else shoot for single
You should first focus on those subjects from both groups which you think are tough for you and also you should take up theory in the end so that you can retain it well. There are some tips on you tube also from various faculties. Refer it from Nitin Guru Sir, i took my classes from him and he is superb.