You need to file a case under benami property act to get the half share in the whole property if your uncle do not agree to give the half share to your father. you can take my assistance in helping with the case to the end (if virtual courts are available at district level in your area) 9013429126
Do you have transaction details of the money being spent for that land? If you do, then you can approach the police and file a case against your uncle for cheating. If you want to maintain family ties, best would be to first send a legal notice, if he doesn't listen even then, then you can file a criminal complaint and later on settle once your uncle becomes willing.
For further queries, you can contact me on firstname.lastname@example.org
Dear clientThis is matter of transfer of property and half share
Please give details information inorder to get your answer
If you want legal advise then you can call me on mobile no 9359867870
Advocate IRFAN SHAIKH