Should I breastfeed my baby to sleep? She is now 1 year 3 months. Am I getting my baby into bad habit? She will still wake up few times at night. Will it affect her sleeping quality? If yes what should I do?

Yes feed to sleep will only make your baby think that she needs to be fed in order to sleep. This is what I call a sleep prop. If your baby relies on external props such as breastfeeding, pacifier or being rocked to sleep then your baby is relying on you to help her fall asleep. Teach her the art of self settling in order for her to sleep through the night.