We suggest you to focus on both exams by devoting equal time and smart work. 

Daily 7hours study is must with 4hours for NEET and 3hours for baords  til January. 

Post January you should have completed entire syllabus and must only appear for NEET MOck exams and rest of time focus only on Boards. 

While appearing for mocks analyse your mistakes and make short revision notes and solve out all doubts if any. 

Post January you must devote 10hours study which is must and adhere to deadlines so you will have tine for relax and effectively you can score well.