Lets say you deliver 1 meal a day for a week - what you could do is create the Invoice for the Monday delivery, then edit that invoice to add the Tuesday delivery etc , then at the end of the week just send the one invoice.
Then for the payment you only have to match up one invoice.
It sounds as though you would benefit from a “Billable Services” tab which has been suggested here.
Your meal delivers could be liken to a courier delivering parcels for a fee,
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