Hi @Lambo2 ,
What you seem to be referring to is “paying in installments”. As far as I am aware, this can’t yet be natively achieved with subscriptions in Shopify. Payment providers, such as ShopPay have these kind of installments integrated in their system. But overall, you could try using our Seal Subscriptions app and set the app to charge the customer every month and then deliver their product once every specific number of months. But you have to know that for each charge, Shopify will create a new order in your shop, which means that you will have to ignore it until the customer pays specific number of times.