Hi aspirant,

Here are some tips based upon my experiences and reviews on the schedules of toppers which can help you handle both:

• Your main focus should be on board exams as you won't be getting more chances like NDA.
• Apart from your normal studies you should give atleast 2 hours of specific time to NDA preparation which includes maximum practice of mathematics problems, reading atleast a topic from social studies and strengthening your vocabulary.
• Read a national daily newspaper for atleast 20 minutes everyday and prepare short notes for current affairs and difficult words with their meanings, synonyms and antonyms.
• You should not worry much about science as it is of 10th level only and 15 days of prior revision of formulae and important topics will be sufficient.
• Learn short tricks and formulae for mathematics to improve your speed.
• Solve past year papers weekly(full length)

Hope it helps!!