Thanks for the clarification. Unfortunately grouping in Airtable won’t help with that because you’re using field data as part of your interface in Webflow, but Airtable’s grouping structure only affects the display of the data, not the data itself.
That said, there is a way to do what you want, but the method to set it up will depend on the design of your base. In that light, I’ve got a question: what determines which item should be listed first for a given month? Is it based on a date field where the entered date is before all of the others? Is it set manually by dragging a record to the top of the list? Something else?