Prediction for package delivery to summarize packages

I have the problem, that a customer can buy something. Now I want to predict if the customer is buying another things in the next few days. So that you can summarize the packages and delivery not every package individually. Has someone read a similar issue? My data looks like

customerid order   article mandatoryDeliveryDate
1         03.05    Shoes   05.05
1         04.05    Paper   05.05
2         10.04    PS5     11.04
2         12.04    Laptop  16.04
3         28.04    Clock   30.04
3         [XXX]              

What I want to predict, if customer 3 is buying something in the next few days. Is it possible to predict if the customer 3 is buying something in the next few days taking into account the mandatory delivery date? And can you also give the probablity of these prediction?

Is there also any blog/paper/jupyter notebook or anything else where someone implemented a similar prediction for package delivery.

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