My daughter is 8 months old. How can I gently encourage my daughter to fall a asleep without breastfeeding and without crying? first six months I did only breastfeeding and after that I start liquid food.

Try a lullaby or telling a story in hushed tones before bedtime. Put baby in bed when she is getting sleepy instead of when she has already fallen asleep. You could give your baby her last feed an hour or so before the bedtime story or lullaby; this way you'll help your baby separate feeding time from falling asleep.