Not getting suspended on Extended international travel ?

hi all! I got a Fulbright award that requires I leave the country for 6 months. my phone is blocked, so I won’t be able to pause my line and would like to avoid canceling it. does anyone know if I’ll be able to get away with keeping it on airplane mode while I’m there to keep it from getting suspended? added context is I’ll be back in the US for 10 days during those 6 months!