Should All The Properties Be Partitioned In Single Partition Deed

My father has one house acquired by way of Gift deed from his father and 1.2 acre agricultural land which is acquired by way of inheritance from fore fathers and there is one more land which is in dispute by my grandfathers and it is not there in the name of my father at the moment. Now we want to split the agricultural land 1.2 acre between all our four as 30 cents each. One of my brothers says Some lawyer has advised that partition deed is not possible to split this land since we are not partitioning all the property at once and it is possible only when all the lands are partitioned at once and we cannot write more than one partition deed. So please advice is this correct or can we partition the other land which is in dispute separately as and when it is acquired and the existing agricultural land can be split by way of partition deed now. Is it right that only one partition deed needs to be there for all the property?