mosschops, do you have the time to make your own stuff? i would start off with one fruit/veg at a time, you can steam or boil/stew them and then whizz up to a puree then freeze in ice cube trays and give 1/2/3 ice cubes at a time depending on how hungry he is!
i started dd's on solids about the same time as you, and to be honest they were on 3 small meals a day after only a couple of weeks because i could see how much they were enjoying it. as long as baby is taking a good amount of milk still as well as the solids its ok. if you are bottle feeding the average is about 21oz minimum they say
is that any help?