My New year Challange, is it possible??

Ok, we are a family of 4. All adults (by age) so my challenge to mrs rebel and myself, can we over the next 12 months spend $100 a week on food for us ??
Ok a small thing is I have bought Coles and Woolworths Giftcards with a 10% discount So it will be $110 a week... I have enough for 2022

We do have quite a bit of food on hand, but it will equalize over 12 months.. What do you think it will cost a 4 adult family to feed itself (not including any alcoholic beverages) for a week averaged over a year.

I buy half price specials, and get flybuys, or woolies rewards points .. as well so that can also bring down the real cost.

Is it achievable, ???