well lets just say you timed your cycle badly just before a vacation
It is indeed way better to ditch the 2nd gear and keep going on the nolva. The 2ndgear blocks the armatise enzyme so that it cannot convert testosterone to estrogen. T
his causes a rebound effect in the long run as your body adapts and starts producing more aromatise enzyme which increasing your body's ability to convert test to estrogen. If you were using nolva the rebound would still happen but you would block estrogen binding to estrogen receptors in breast tissue because of the nolva having a higher binding affinity to those effectively blocking estrogen from binding to them.
If you cant take the nolva along you can keep running the 2nd gear and hope it keeps estrogen levels at bay enough till you return from your vacation.
Its not pretty though, you should keep running the nolva till all your gyno symptoms are away. Pray this endavour will not end up giving you permanent man boobs.
Goodluck! I hope you will be ok.