Don’t bother with sleep training now because once they start teething, everything is on restart again. They will have their own sleep cycle as they grow.
Try stretching her wake time before bedtime. Try shower > feed > sleep. However you mentioned that she is fully breastfed (assuming from the breast), hence she might wake up more frequently to feed.
It won’t last long, as they grow, they will tend to sleep longer (STTN) and feed lesser. For now, I’d advise to continue feeding on demand, let her adjust to her sleeping cycle. 😊
Anonymous