My 8 months old slept until now very well. Fully breastfed for 6 months, now still breasfed plus solids.?

she eats well during the day, has 2 shorts nap, or one longer, has dinner, bath, breasfeed and cot. But awakes often, and gets up early anythibg between 4 and 6am. I have tried the baby rice on the top of dinner, but stil the same. She doesn t seam to be in pains with teething or tummy. Please help.