No worries at all. Re the tbs measurement, I have 2 sets of measuring spoons and one says 1 tbs = 15 ml (gr) and the other says = 20 ml (gr)! I usually just ensure that if I divide the recipe into the number of portions that means there is 50gr in each little pot. I batch cook and put the food into little plastic pots then freeze.
I rarely use the oven, even if the recipe says to casserole it - I just do everything in a big pot and let it simmer until all the veg are tender. So it is boiled in water or stock rather than steamed.
wrt the organic meat - sorry, I am now back in Oz so can't help you on that, maybe google for it?
Hope this helps but would recommend getting the books - they are fantastic and as your bub gets older you can cook the same recipes for the whole family's dinner.