Baby Clothes Question!

Racheal • First Time Mommaa | 17 &&&' Pregnant | Due Sept 15th | Blessed With Our BabyGirl Leiana Ann Pritchett💖👶🏽👨‍👩‍👧😍🎀
So far I've gotten plenty of clothes for my baby girl . But I feel like a mess with all these different sizes . How'd you sort your baby clothes ? 
For example 0-3 months and also 0-6 months . But they both go from 0 so do you put them together or separate them anyways ? I hate feeling like I'm not organized for when the baby girls here😩😩😩