Can I construct new building while the partition case is still on my property?

I am the last son to my parents, my father was a business man and he gave his self aquired commercial property to me by will, which is registered as per the legal rules. My father has 3 more sons and 1 daughter, he has given each one seperate properties, which were in my mother's name through registered will. But now my second elder brother has filed a case for partition, claiming that all these properties are ancestral, and saying the partition has not done properly. It was in 2019/20 when corona started, till now I could not attend the case because of corona. Since I wanted to demolish my building and construct a new building from so many years and I am saving money for this (everyone in my family know about this), I went to my brother and begged him to withdraw the case, but since he is very jealous of me from my childhood, he told that he will never withdraw the case till his death, and after he dies his daughter will continue the case, he directly told me that he purposely filed the case as these type of cases go for years and years, and I would not construct new building. Now since my property is very old, I need to demolish it and construct a new property, can I get permission for it legally? Or should I wait till the case stars in the court? Some advocates told me that if I file vakalat and start fighting for it, it will take many years... please suggest me what should I do?