Moving to next size clothing

Do any other mama’s start getting so sad but so proud when your little one has to go to the next size of clothing/diapers?!

I’m legitimately so sad right now. My baby girl just turned 4 months last week, and I’m having to move her up to 3-6 month clothing now, and she’s already in size 2 diapers. I’m so happy that she is growing well and everything, don’t get me wrong. But having to re-organize and clean out her dresser and seeing if there’s any new clothes I have to buy makes me so so sad.