Ay alam ko yan! Mixed feeding talaga ang adjustment period lalo na sa poop consistency. Since gumagamit ka ng formula at breastmilk, ma-expect mo na yung poop niya ay parang nasa gitna, hindi ganap na soft like pure breastfed, pero hindi rin fully pasty like pure formula fed. A few of us tried combo feeding, at nakita namin na ang consistency ay parang peanut butter or mushy kind of texture, at ang kulay is usually yellowish-brown or greenish-brown, totally normal yan. Basta consistent lang ang pattern at walang sudden changes, okay na okay. Just keep an eye on frequency niya (dapat regular pa rin) and kung may odd smell or color changes, better check with your doctor para peace of mind lang. Every baby is different kaya yung sa baby mo might be a bit different from my experience, pero sounds like normal mixed-fed baby poop to me!