Consolidate 1 GST Invoicing to Client but service proving 30 days.

Hi 

Our Company is into providing product & services to the client, every day we need to deliver below-mentioned products my client wants 1 bill to be shared end of the month for all the services

We basically deal with below-mentioned products

1) Packaged/processed pantry items like tea, water

2) Packaged cleaning items etc.

3) Stationary

4) Office boy

5) Cooked Food meals

Please suggest on the same.