Honestly, I'd say 5-7 sets of newborn lang talaga kasi they outgrow it so fast, pero go ahead at mag-stock ng marami sa 3-6 months dahil doon talaga sila mag-stay ng matagal! A few of us first-time moms din nag-panic buy ng newborn sizes tapos parang hindi na-suot ng mabuti, so super practical ng approach mo na i-focus sa 3-6 months, that's really the sweet spot where they'll fit longer at makaka-save ka pa ng pera sa dami ng bili. Don't stress too much with the newborn collection, mama!