Father can make application to senior citizen tribunal to direct son to vacate portion of house in his possession
2)only on father making application would gift deed be set aside by senior citizen tribunal
3) father can execute gift deed n favour of your wife for remaining flats
4) father can execute POA in your favour
5) for filing suit you need correspondence exchanged by father with son asking him to vacate property
6) better issue notice to vacate property
7) partition suit can be filed for division of property
8) on demise of father legal heirs can continue the suit