Hi Amol,
I am not sure if I get your question right as there seems to be a pretty basic standard solution for your "problem".
In short: Create a new planning view with the necessery key figure on a monthly level and a relative start which is always the current month.
You can find more details in this SCN blog (I don't mind that it's related to SNP. Only the planning book view chapter is relevant)
SNP Configuration Steps for Planning Area and Planning Book/Data View
regards Peter