If your 10-month-old baby seems to have hard stools, one way to help ease constipation is to encourage them to drink more fluids like water and milk. You can also give them small sips of water throughout the day. If this doesn't work after 3 to 5 days, you could consider giving them a medication like PEG-3350, which can help with constipation. Be sure to consult with a pharmacist to determine the correct dosage based on your child's weight. If you have any further questions, feel free to ask for more guidance.