I was forever buying fresh veggies ( still do but not as much in quantity ) and discovered the frozen packets of mixed peppers/chopped onions/mushrooms etc. All cost around £1 a bag from supermarkets and Iceland.
So much easier to open the bag and take out just enough and put back in the freezer, will last a lot longer, is cheaper and also saves on the prep time.
Freeze slices of bread in sandwich bags in groups of 2/3 for toast/sandwiches.
Costs almost the same to buy a smaller loaf so makes sense.
Meal plan minimum of 3 meals per week.
This allows room for eating out/take away and gives you a break from having to come home and wonder what to make.
Sometimes spontaneity is good but having a back up meal is always good.
I definitely think it's better to do a "big shop" as it's so easy to go to supermarket for 2 things and walk out £25 lighter.
Account for all condiments/salt/pepper etc with the first shop after moving in and then replace as needed.
Buy a decent selection of dried herbs and spices as these can be used to liven up pretty much anything. Mine cost 49p each in Lidl.
Aim to have a veggie meal every week.
Have a store cupboard staple, ours is pasta and sauce for exqmple and can be thrown together in 10 minutes.
I often do fridge roulette and take random things out, google them as a meal idea with the ingredients and try new things.
Buy lots of Tupperware style tubs, these can be bought very cheaply.
When cooking a big dish such as lasagne, make the biggest one you can and put the extra portions in containers, label and freeze.
I used to be so disorganised and have become much better now, i get stressed easy and identified what my triggers were.
One of the biggest stress triggers was meal times.
Life has been so much easier.
Lastly- I clean out the fridge and freezer before I go shopping as there are 2 benefits of this. One is that I come home and can put the food away quickly into a nice clean space and two it helps me to identify what I need as I write my list.
I never stick to it though