how to gain confidence when going down on a guy

so i’ve been hooking up with this guy and for some reason, i get so nervous every time i wanna give him head. i was with my ex for two years (only guy i’ve given head to) and i got super comfortable with initiating sex and giving him head so i just don’t know why i feel like such a high schooler again with this new guy 😭 it was pretty easy to make my last bf finish from head so i think im just putting a lot of pressure on myself to like blow this new guy’s mind or something idk. i’ve put it in my mouth a few times but like it’s always for maybe a minute and then i just hop on.. like i don’t do the whole shabang bc IM SO NERVOUS everytime i give him head. yesterday, he kind of hinted that he wanted some head & i straight up ignored it even tho i really wanted to. like i just don’t get why i get so scared with this guy, it’s not like he does anything to make me uncomfortable. anyways what are some tricks for getting over this mental block and just finding your confidence in giving a new guy head?? lmao