Baby growing up too fast

K • New mommy | Entrepreneur | Dreamer
Any new moms out there get sad and happy about their baby reaching milestones?. I know it sounds weird. Just went to our 6month Appt and the Dr says he can eat more food now etc. He's also been crawling for that last 2 weeks. I want him to grow but it's happening too fast. I could cry right now lol.