The 5 year clock starts when you establish ANY Roth IRA. If you have has a Roth for 7 years then it has been met. You can always withdrew your own prior contributions anytime, only the earnings are subject to tax.
For tax purposes you only have one Roth IRA that is the aggravate total of all Roth accounts. Any Roth contributions apply collectively to all Roth accounts.
The only exception is if you convert a Traditional IRA to a Roth. Each conversion has it's own 5 year clock.