Size question for clothes

Ba

Baby girl is due February 8th (will probably arrive in January)

When I'm looking at stuff it goes

Newborn

3m

3-6

Then 6-9

I'm so lost on how the sizes evolve. I'm not buying new born but is 3m and 3-6 like the same? Since she will be 3m in April can I start to saftly buy summerish stuff for her?

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors