This has been such an adjustment for Logan, but honestly he has done pretty well. He loves his baby brother. When he wakes up in the morning he runs to our room and peeks over the crib to make sure the baby is okay. If Mason cries, Logan will say "baby" over and over again until I check on Mason. He is very soft and careful.. I can't wait to see them interact as the get older, I pray that they are best buds!