Every six weeks, 24 dozen of the same thing. That customer has ordered the same way for two years. One time they forgot, ordered a week late, and you had to fit it in around a bigger job.
The system reads your order history and finds the rhythm per customer. Not everyone has one. For the ones that do, it sends a reminder a few days before their usual order would be due. A short email or WhatsApp. Your usual order is due around the 14th, here it is, click to confirm.
The click places the order. It arrives as a job in the schedule with the usual quantities already filled in, and they can change them before confirming.
If they do not click, nothing happens. No second nudge unless you want one.
This is the kind of thing we build. It runs in your own accounts. How many of your customers order roughly the same thing roughly as often?