What to do to a baby who only sleeps when latching? She drinks from a glass already but can never sleep without latching. I have an event in November and I will be away. I'm worried how she'll adjust to situation..

This is also my current problem as I will be away by January. So as early as now, my husband started putting our baby to sleep at night. I have to stay out of the room until the baby is asleep. There are days that we're still unsuccessful but there are days that she fell asleep without comfort nursing.