I don't know about in a week but this is what I ate today:
Big bowl of oats, banana, pear, raisins, sunflower and pumpkin seeds, with soya milk.
Hummus, 2 slices wholemeal bread. Half a raisin and cinnamon bagel with butter. Another banana.
Barley risotto with leeks, courgette, peas, and broccoli. Apple, kiwi. Low fat natural yogurt with sliced banana and raisins.
Pints of redbush tea with copious soya milk in.
This maintains my weight, but I am also fairly active (don't drive) and breastfeeding at the moment. It was interesting to write down, actually, I hadn't realised how many bananas I ate.