Yes, it is possible to give a product like PEG-3350 (LAX-A-DAY, Restoralax, etc.) to help with constipation in an 8-month-old baby. This product can be diluted in a small amount of any liquid to drink. The dosage should be 1 gram of powder per kilogram of the baby's weight. It is important to consult a pharmacist for assistance in measuring the exact dose, as only adult dosages are typically provided on the packaging. Make sure to also encourage the baby to drink plenty of fluids and consume foods high in fiber to help soften the stools. Additionally, doing exercises like leg bends and massaging the baby's belly in a clockwise motion may also help alleviate constipation.