How can I bill each reading captured in 3 months and invoice should be generated at end of Quarter

Hi Team,

We have a scenario where the reading is captured in 3 months and the invoice should be generated at end of the quarter.

Example:

Reading

Jan 100

Feb 100

March 100

Invoice will be generated on 1-April with cumulative reading of 300.

Our requirement is to generate invoice on 1-April but it shouldn't be cumulative, please let us how can we achieve this?

Thanks.