Usually babies sleep after 5 minutes of breast feeding when their thirst quenches but you should wake them by rubbing behind ears and on soles and feed for 15-20 minutes ideally.
How many times is demand schedule as and when baby cries or every 2nd hourly.
Next Steps
Always empty one breast before changing to other.
Health Tips
Try to drink a glass of milk by yourself twice daily and before every feeding a glass of water.