For sore nipples I used lanolin cream in a tube. I just put a little on, and my body heat kind of 'melted' it or warmed it enough to spread on. It's kind of thick. I have 5 children, and my second daughter was the one I breast fed the longest-10 months, and stopped abruptly once she bit my nipple half-way, and it bled and I was terrified to try anymore. If you think she is actually 'chewing' and not reflexing, and you are scared of the same thing, then you could gradually start weaning her now, before she get's a tooth. Many mothers go on and breastfeed longer, that's a choice, but I will tell you I breastfed all my children from 8 weeks to 10 months, and not one of them went hungry once they were off the breast. The only thing I learned with my youngest son when he was fussy after the formula transition was that he found it hard to digest the formula powder, and once changed to concentrate he was fine. Also, a breastfed baby will not be lactose intolerant and not need special formula if they tolerated the breastmilk, because breastmilk has lactose. A misconception many mothers believe when thier baby get's fussy because of gas. My youngest baby is now 2 1/2. I weaned her from breast to bottle simply because I was exhausted with it,and had 4 other children to tend to, and she did just fine with it. Just use your judgement and what works best for you, your daughter won't know otherwise. You can still hold, cuddle and nurture your child while feeding her a bottle of formula. Think of adoptive mothers, or mother's who didn't have any milk(like my sister), are they less of mother's or are thier children deprived b/c they had a bottle instead of breast? No. And, formula today is very nutritious and very similar to breastmilk. Don't worry, it's what makes you comfortable that matters. She will thrive.