Aw, first time mom worries, I totally get it! Honestly, once a week or every 4 days is on the constipated side for a toddler, most babies that age poop more regularly, especially if they're still mostly breastfeeding like your lo. The papaya and water are good moves, but I'd really suggest checking with your pedia just to rule out any issues and get personalized advice, kasi baka kailangan niya ng more solid foods or maybe something else is going on. A few of us moms noticed na when our babies weren't eating enough solids and relying mostly on milk, ganyan ang poop pattern, so siguro add more fiber-rich foods like avocado, banana, or oats if doc gives the go-ahead. You're doing great by being observant, totoo yan!