Land grabing case

My grandfather has 6 Cents of land in Vijayawada, AP. Out of that he gave 3 cents to his daughter (my father’s sister) and registered in 1978 in her name and remaining 3 cents he gave to his son ( my father) in 1981. There was a house at that time in the 3 cents that came to my father. As my father was living in Hyderabad he had let his sister and her family to live in that house and he took care of my grandfather until he died in 1997. My father’s sister (aunt) and his son continued to live in that house until it collapsed in 2004. They moved out to a rented house and in 2005 my aunt died. In 2009 my aunt’s son put a small kutcha house in the 3 cents given to his mother and paying house tax for that. Now the issue started from 2012, he moved his kutcha house to the center of 6 cents and is claiming that whole 6 cents is his. My father took this matter with all elders in the family but he is not moving his kutcha house to his 3 cents. In 2013 that guy went to the court saying my father is threatening him to remove his house form his land.. in the case they filed that he is in hold of 3 cents and the house is in his 3 cents though it is in 6 cents. When my father appointed a lawyer to deal with that case. He argued that 3 cents belong to my father and they argued that 3 cents belong to them and for the house they are paying taxes. Court gave decision in favor of them saying 3 cents and the kutcha belong to them and should be allowed to enjoy in 2015 ( we don’t have problem with that). But the fact is that kutcha house is in the middle of 6 cents and whole 6 cents they are enjoying and I think my fathers lawyer failed to argue this point. Now my father’s lawyer filed appeal suite in the next level court saying the lower court judgment is wrong (not sure what is he is going to argue) this is filed in 2015 Oct and from then the case status is waiting for LCR.. I see this same status being updated every 2 months from then. This is again annoying thing on this On TOP of this now my father lawyer filed another declaration suite for my father’s 3 cents and asking for removing that kutcha house My father is 65 years old and not educated. Iam able to only support my father financially related to this issue but could support him morally i.e. going along with him to see the lawyer..court..etc . as iam living in US due to my job 1. After going through this above issue can any one of you please help explain what is going right and what is going wrong on this issue? is my father’s lawyer skilled? do we need to continue with him ? 2. Considering my father’s age is there a way to request court to expedite/prioritize his case. He is already 65 I don’t like my father to see courts for next 10 years 3. Can my father file any case in police station on my aunts son for occupying his land? if, let us know how to write a complaint letter and under what section they can file FIR