Is property distribution after 13 yrs valid in Islamic Shariah?

After the death of my grandfather in 1998, my father and his 4 sisters got his whole property as a heritage. Immediately after the death, some elders had called a meeting (“Panch” with only three members) and mother and decided to have distribution of the property. But, my father did not like to do so. Unintentionally he had joined and followed them (he couldn’t argue against them). He did not want to do so because his mother was alive (and still alive). Then due to absenteeism of all sisters, “Panch” members said to write a letter regarding their shares. He did so and asked about the intention, that they were accepting or not? What they wanted to do with those shares, and asked to reply immediately. But at that time in 1998, they did not reply. (Till today even after 12 – 13 years, they have not replied to that letter). When price hiked in 2008, they sold some properties, kept him (my father) strange. When he asked about that, they denied and replied that he has no right to ask about. Now he is frustrated and wants to make partition again with the contemporary values and wants to get all sold property back, because they have sold without informing him. Therefore, he has sued against all who involved and helped to sell these. He wants to remain all farming lands (as a valuable heritage and for his livelihood), and give the values to all sisters which will they get as shares. But, they are not accepting this proposal. So, please clear the points below. To sell property (heritage), keeping only son inheritor strange (in dark) is lawful in Shariah? Is distribution valid even after 13 years without response from sisters and values also have been changed? To offer sum of money instead of farming lands is lawful in Shariah (as he wants to keep as a heritage and livelihood, do not like to sell)? To make distribution again with current values is lawful or not? Please help us to get the rid of these problems with the help of Islamic law. Property: Farming land = 8.5 acres Values = 45 lacs. INR House = 01 nos. = 5 lacs. INR Total Siblings: 01 Son, 02 Sisters and mother is also alive.