Weaning questions

I'm ready to wean my daughter from breastfeeding (shes 13 months) but I'm worried because i have tried introducing her to soy milk (shes allergic to dairy) but she doesn't like it and throws her cup away and cries. She hardly drinks water and ived noticed she has less wet diapers. Also she still wakes up at night to feed how do I eliminate night feedings if she doesn't accept water? Give me all your weaning tips please!