C.W.
Hi there,
I stopped nursing my daughter at 1 years old. I did this because she seemed ready but I was working and she was drinking from sippy cups during the day and during meals so we just gave her a sippy cup instead of the breast and she was fine. I would start alternating with the cup. At one years old babies can have whole milk and we feed our daughter who is about 20 months now milk generally at every meal, but you can ask your doctor.
I probably would wait to completely wean until back from vacation.
Good luck1