Firslty, as it has been mentioned in the present query that he has transferred the same to you by way of a gift deed.
Secondly, but, the same was registered on his name after some delay at your part.
Thirdly, the gift deed would need to be registered within a period of four months from the date of execution as per the applicable provisions of the Registration Act, 1908, with the applicable sub-registrar of assurances since the subject matter of the gift deed would be immovable property. Depending upon the state in which the property is situated, applicable registration charges will also have to be paid at the time of registering the gift deed.
Fourthly, so, as per the present situation you may be not time barred as it has already been executed and registered 2 years back.
Fifthly, there has been a time limit to get it registered, but not to get it transfer in your name.