social anxiety > new job

I suffer from social anxiety quite bad and I've recently got into a new job which involves interacting with customers. I'm being asked questions I don't know and serving food and drinks. As soon as someone waits for my assistance I panic and don't always know what to say. With social anxiety you tend to get scared of embarrassing yourself by doing or saying something! I love this job so much but I have no confidence😩 I wish I could speak to them and have bonds with them but I'm too shy😣