Don't want baby to grow up! 😫

Does anyone else feel like they want to keep their baby little forever? She is only 5 days old and I already can't stand the thought that she's growing older everyday! I was looking at her pictures from when she's just born and my heart felt broken that she already looks a little different. I even cried quite a bit over it while holding her (triggered by singing row your boat lol...) Is this normal? Part of baby blues or ppd? I'm not sad about losing sleep or my old life or anything. I just love her soooooo much :')