Bing,
Feeding 3-4 bottles of milk n 2 solid meals of porridge a day is very traditional way of feeding bb. That's how we were brought up. My mum always tells me we ate porridge with fish n carrot/spinach everyday for yrs!
Actually, mobile bbs/toddlers burn up their calories very fast, so it's better to let them hv many small frequent meals.
U can offer yr bbs snacks in between milk n meals. Esp abt one hr or so aft milk feeds, they can actually eat already. U dun hv to feed them or insist they finish. The main thing is to offer food frequently so they hv opportunity to eat if they want to. This also encourages self feeding n exposes them to a wider variety of food.
Snacks can be fruits. E.g Apple, pear, melon, banana slices. Just let them gnaw on it themselves. Or yoghurt, cheese, biscuits, bread, pau, cornflakes. I sometimes home make potato chips or apple chips by baking in the oven.
As for their meals. Instead of porridge everyday, u can try macaroni or kway tiao soup. Chicken stew with potato n carrot, baked rice etc etc.
Not all the food may be suitable for them now but it's something to work towards as they go beyond 1yr old.