Hi Anup,

After a certain level in life, your grades wouldn't be important. In today's competitive world, it is more important develop skills rather than gain more marks. Even people with extraordinary scores suffer later due to unemployment. I am not discouraging the concept of break year, but it is not always marks that needs to be chased. 

Even if you opt for a break year, I would suggest you to utilize it to analyse your interest and decide which stream you would want to pursue in. Develop your skills. That is more important during the time of placements rather than marks. 

All The Best.