Congrats on your pregnancy, mama! Honestly, at 15 weeks you're not too early, a few of us actually started around month 4-5 kasi nakakastress kung hinuhubog mo lahat last minute. For the nursery, priority lang talaga ang crib, mattress, at safe bedding, then build from there with clothes in newborn and 0-3 sizes (trust me, babies outgrow newborn agad!). Don't rush to buy everything right away though, one of my mum friends regretted buying too many things na hindi naman kailangan, so maybe make a checklist and spread it out over a few months. The must-haves like diapers, wipes, and feeding bottles you can start stocking around month 7-8 na, mas mahusay pa, less storage stress and you'll have a clearer idea ng brand na gusto mo by then. Enjoy the process naman, this nesting phase is actually kinda therapeutic!