Everytime I deep throat I throw up

My bf so used to it by now. He kinda laughs at me, We’re long distance so my throat never gets used to it.

However I go innnnn. And sometimes I’ll throw up. Usually I’ll run as soon as I feel it and and come back before he gets off hard. And it’s never rlly real throw up it’s allllllltoooott of cleat spit lol. Any tips on keep the dick down when I deep throat. Even when I brush my tongue in the back I gag lol. And I have a long tongue so somethings gotta give :/