My now 3 1/2 year old daughter seemed to lose interest in nursing when she was around 10 months old too. I was devastated because I wasn't ready to stop yet and I didn't want to have to deal with bottles/formula etc and had hoped to nurse her for at least 12 months until she was ready for cow's milk.
Turns out that she was just on "strike" and she regained her interest in nursing again and didn't wean until she was 20 months old. I can't remember how long it took for her interest to return...Maybe a week or two? On the weekends if it's feasible for you to do so, try to go topless so that your breasts are readily accessible and do lots of snuggling/cuddling with your baby. Spend lots of one-on-one time in the bed or in the chair where she usually nurses. Good luck, and hang in there!