Bj n00b.... help??

Nala • 20𝐲𝐫𝐬 - 𝐀𝐫𝐭𝐢𝐬𝐭 - 𝐁𝐢𝐠 𝐃𝐫𝐞𝐚𝐦𝐬 - 𝐈𝐧 𝐚 5𝐲𝐫 𝐑𝐞𝐥𝐚𝐭𝐢𝐨𝐧𝐬𝐡𝐢𝐩 𝐰𝐢𝐭𝐡 𝐚𝐧 𝐚𝐦𝐚𝐳𝐢𝐧𝐠 𝐦𝐚𝐧 - 𝐏𝐢𝐬𝐜𝐞𝐬♓︎/𝐀𝐫𝐢𝐞𝐬♈︎ - 𝐏𝐮𝐞𝐫𝐭𝐨 𝐑𝐢𝐜𝐨 🇵🇷 - ☾𝐁𝐚𝐛𝐲 𝐖𝐢𝐭𝐜𝐡☽

I wanna prepare to give my boyfriend a blow job, i have everything down except for.... deep throating.. my gag reflexes are INSANE, & I end up throwing up a bit when practice with my fingers or dildo, & I’m pretty sure no man wants a dick vomited on. Does anyone have some tips to not gag so easily?? Please it’ll be much appreciated!