Only breastfeeding baby

Jasmine
My baby is almost 3 months. So I started off breastfeeding as well as pumping and giving her bottles. She started to refuse the bottles but take my breast. Her pediatricition said it's probably because she likes the warmth of my skin as well as the fresh milk. About a month ago I started only breastfeeding her, no bottles or pumping. Anyone find any cons in this?