Hi i read your requirement :
create a subscription module for M2 similar to like SuprDaily, BigBasket Daily or MilkBasket.
Features
1. User and Admin can control subscriptions
2. Pause Subscription
3. Change subscription
4. PrePayment and PostPaid Billing Option
5. Daily, Weekly, Alternate Day based subscription
6. Person can change qty any time.
and can we discuss on the task
As a Magento 2 Designer/Developer are expert at offering:-
* Web Design & Development,
* Magento 2 Consultation,
* Custom Magento 2 Theme Design
* Magento 2 Template Design & Redesign
* Magento 2 Template Integration
* Magento 2 Plug-In Integration
* Magento 2 Shopping Cart Design
* Magento 2 Maintenance Service
As a Magento 2 developers have knowledge:-
PHP5, CSS3, HTML5, j query, JavaScript, Ajax, Responsive theme, Custom module development, Custom shipping method, Shopping cart development, Theme design, Magento 2 upgrade, Magento 2 extension development.
Thanks
Krunal