Sequence of Patching NWDI controlled components and JDI instane

Hello,

Scenario:

We have Netweaver EP (Sbx, Dev, Qual, Prod) along with DI usage installed. We have NWDI controlled RTS as Dev/Cons/Test/Prod

We have one JDI instance installed for the entire EP/NWDI landscape (It is configured against the Test environment)

Question:

We already applied patch to EP(Sbx) using JSPM.

Now we started to do patching to XSS components using NWDI (to our DEV track).

When do we patch our JDI instance (which is configured with our TEST NWDI system)? Only when we patch our EP(Test), then we patch JDI instance?

Is there a sequence to follow while applying patches?

Thanks so much in advance