sds is also drinking 4x FM, 1x cereal, 1x porridge per day. sometimes if we go out and no time to cook porridge, will replace with milk or cereal. he drinks 210ml of milk each time. so total will be around 840ml per day. i think your baby is eating/drinking enough.
pls dont feed your baby apple directly. you can steam the apple until it soften, then feed him. my friend taught me that. she always steam the apple and give her baby. i have not try yet though.
in between his feeding, i will give him some gerber guaduate puff, baby bites biscuits, teething rusks etc.. not alot, just abit each day and i make sure he drinks plenty of water everyday too. if you r giving him those biscuit which specially made for babies, you dont have to wry him getting choke, cos all these biscuits will melt easily in his mouth. usually before i give dear son any baby biscuits, i will try 1st. to make sure it melts easily =)