I know exactly what will help. Practice saying “arlic” until it sounds like “garlic”. I personally have trouble with G and D and B so I use this method everytime and it always works because the person 1. Doesn’t hear you not saying the first letter and 2 it just avoids the whole situation of stuttering on this one particular word you’re having trouble with at work. It sounds super stupid this method and I thought that too but I swear if you practice enough you will find it works I promise. Edit: I shouldn’t say it ALWAYS works but it is a helpful tool sometimes.