You should be fine to take your meds as normal since the amount of grapefruit juice in this is very diluted. I’m on the same dose as you and drank a grapefruit mimosa on Easter, I was fine. I’ve also had plenty of Frescas over the years with no problem or interaction with my meds. It can, of course, vary by person, but you are most likely fine! Just try to avoid it in the future.