Upgrade EX4550 from 12.3 to 15.1 (recommanded version)

Hello,

we have EX4550 standalone running 12.3, juniper is recommanded 15.1

is it possible to upgrade directly from 12.3 to 15.1 ? or we need intermediaire version.

Note that from juniper upgrade policies, we can upgrade directy from EEOL version to next two EEOL releases.

As my understanding we can upgrade from Junos 12.3 (that is EEOL release) to 14.1 (that is the next two EEOL release), even from 14.1 we need to go through 14.2 before reach 15.1

Do someone had been done already this upgrade, what is the exact path to follow.

Thanks for you support.