Honestly, this is pretty normal when you first introduce solids, their digestive system is still adjusting, and 6-7 times a day isn't unusual if baby is okay and acting normal like yours is! But since it's day 3 and happening consistently, I'd say check with your clinic just to be safe, especially to make sure it's not a sign of anything else, better to get a quick confirmation from the doc that everything is fine than worry, kan. In the meantime, watch if the poop colour or consistency changes drastically, or if baby gets feverish or floppy, then go straightaway.