Stacking Subscriptions

I have an idea for a new Feature the abilty to stack Subscriptions like say someone wants to pay for 2 years or pay again before there time is done like how its done on youtube for people who are on disability or on low income having something like this on stacking helps alot lets say one month u dont have the funds and u paid for 2 months the month before or a year were u cant afford to pay for the next year but since u paid for 2 years u are safe

Original request from Discord #pro-feedback HERE