How to avoid the splitting of billing lines for fixed billing method

Summary:

Hello Team,

We see the splitting of product billing lines against the subscription, I observe it is happening due to the start date which is either at the mid of the month or 2nd of the month. This creates 2 lines of each month which will further creates 2 invoices, may be this OOTB functionality.

However, how I can avoid this, against the 'fixed' billing method, for 'Recurring Price', as charge name for billing frequency as Monthly basis. It should on continuous Monthly basis or any other billing frequency. We are not using 'Prorate' check box in our process.

I have attached the document for your references.