Some have advised you to put sunscreen on your newborn. But if you talk to your pediatrician and read the labels on the sunscreens, they will tell you that you should not use sunscreen on babies under 6 months. Although being in the shade is a great idea, the harmful rays of the sun are still "active" in the shade just not as much. Some people just put long sleeves on their babies/kids, which only provides sun protection as if using an SPF 7 sunscreen - not very effective. Bottom line is, if you go outside w/your newborn and toddler, you won't be able to stay outside too long. Thankfully, your newborn will sleep a lot, so, if you have a backyard, you can leave the newborn sleeping inside, while you take the monitor outside with you and you have time to play w/your toddler. That should give your toddler enough time outside and when it's time to feed the baby, it's time for a snack for your toddler. You can also arrange for play dates. Have other moms come over that have kids your toddler's age and have them look after your toddler for a bit while you look after your newborn. Or have other moms get your toddler for a couple of hours and go to a playground/park somewhere for some play time. It'll be an adjustment for all of you for sure. But hang in there, you can do it. And your toddler will be okay not being outside a couple days a week. It will not create any lasting damage.