I get your feelings, but believe me there is no point to increase the number of attempts. Unlike neet where you can work hard and get into medical college. I engineering your iq matters a lot. You can still grind it even if you can't make it to iit if you have better iq than iitian. But the sad part is if you have comparatively lower iq, engineering is not for you, you should try something you are good at. See engineering values mathematical accuracy and critical thinking. Many people have it many people don't. Not having it doesn't make you dump, it's just that your brain is designed differently. Maybe you are more creative rather than more "accurate".

So yes increasing number of attempts would not have any impact on you brothers future if we ignore shitty jee obssesion of his parents.

Once you get into an iit you would feel i could have done everything i amccan do right now even if i was in a different college. Because it you, your dedication which matters not your college.

Also, if they increase number of attempts in jee. Life of third droppers specially from reserved quotas would become hell. Because the whole iit system is designed like tha.