Limitation act and partnership deed

I was given a share of my father shop according to his registered will but i got late due to my elder brother (who was tbe other partner ) delaying tactics and his hiding of a thumbimpressioned new unregistered partnership deed from me ( a fraud because my father used to always sign -i produced a Alzheimer's medical certificate but was not able to bring doctor as witness ) my son also had a medical problem. the high court dismissed my petitiion as being time barred as i filed in the fourth year from his death but within 3 years of will opening.Does limitation period of 3 years for rendition of account start from death of father or the day of knowledge of registered will of both parties.should I appeal further