Girls, I need your advice ? We really want to go on a trip in the summ…

Girls, I need your advice ? We really want to go on a trip in the summer (we've been wanting to for a long time, max 2 weeks), but I'm hesitant because my daughter is on Gv. In July, when we plan our vacation, she will be 11 months old. I don't know how to handle Gv in this case, maybe you have some ideas? Is it possible to switch to formula temporarily during the trip and then back to Gv after arriving home? Or is it too stressful for babies on Gv?