DD 1 is one next week, She has bf when first wakes up although generally takes little and sometimes none, she then has:
Breakfast (~8am)- different selection from blueberries/raspberries/strawberries, cheerios, shreded wheat, porridge, scrambled egg, cottage cheese, yoghurt sometime with quark added generally flavoured just with the fruit. (It depends if me or DP is giving her breakfast and if I'm eating) All of it self fed, with her currently putting the spoon back in the bowl for yogurt, she can't fill it herself - and she'll try and drink from the bowl and get it all down herself as well as in her mouth.
Snacks - banana, apple, cheese, raisins, lassi. Sometimes bf
Lunch (~1pm), some leftovers from a previous nights dinner, or whatever we're having, although when that's sandwiches she tends not to eat them as she's not a fan of bread at all, and she'll just eat the filling - salad, tomatoes, cheese, ham etc. Also often have bean salads, or noodle salads or similar things like that.
More snacks offered and taken generally. Sometimes bf
Dinner (~6:30pm) will be what we're eating, if it's shepherds pie or similar she'll probably eat 4 or more heaped tbsps, she's been self feeding it with her hands since 6 months, scooped it nicely, likes cheese dishes, mince dishes, things which are easy to scoop, also potatoes always go down well, but we just give her what we're having and don't really worry how much she takes.
She tends to go down at about ~8:30pm with a breast feed, and wake maybe once or twice a night with a feed.
So quite a bit different, she sometimes goes all day without any bf'ing and minimal calories in drinks (just the Lassi, which tends to be given when DP is out so bf is not an option, we've stopped expressing at all now - and doesn't have a bottle now) but obviously eats quite a lot more during the day.
Are you sure he's not throwing food on the floor just as part of learning about throwing and your reaction, rather than actually having finished? In any case he sounds fine, currently still drinking lots of your milk, but that's nice and nutritious so should be fine, it's not too much, but more food is probably good - maybe start offering snacks alongside the bf's in the day?