Have you been eating with your parents ? (as you say it includes food)
In which case you need to think about kitchen implements, pans, crockery, glasses etc etc
What about towel, bed linen, tea towels and so forth - do you have all your own of that kind of thing ?
No, it's not silly to stock up on things now. When I moved int my first flat, I had to do without lots of things, as couldn't afford to buy them all at once. So, in your normal weekly shop you would buy things that your eat up each week (bread, milk, veg, meat, eggs etc) and all the things that last a lot longer than a week normally get staggered over different shops, but for your first shop, you need to get all of them - coffee,tea,sugar, pasta, tins of store cupboard things like tomatoes, and all the things you have 'a bit of' here and there - salt, ketchup, herbs, spices, vinegar, etc as well as your washing up liquids, toilet paper etc etc etc. Makes a LOT of sense to start stocking up on things.