Start with the meals you already love

The meal plans that survive longer than a fortnight are rarely the most ambitious ones. They are built on food you genuinely enjoy eating on a Tuesday evening, when you are tired and the fridge looks uninspiring. So before you open a recipe book or scroll through ideas, write down eight to ten meals that already work in your house. Spaghetti bolognese, a tray of roasted vegetables with halloumi, lentil soup, omelette and salad — if it regularly lands on your table, it belongs on the list.

Next, add a handful of breakfasts and lunches you actually eat rather than the ones you think you should eat. Porridge with berries and a spoon of yoghurt is a perfectly good breakfast; so is wholemeal toast with peanut butter and banana. The aim is a rotation of roughly ten to fourteen dinners, not fifty. Repetition is not failure — it is what makes a plan realistic enough to follow.

Plan around your week, not around your recipes

Most plans collapse because they are written for a fantasy week with no late meetings, no football training and no unexpected overtime. Look at your diary first. Mark the evenings when you will be home late, the days you are out for dinner, and the nights when you will be cooking for children, flatmates or a partner who is working late.

• Busy evenings: keep two or three meals that take under twenty minutes, or that simply need reheating.
• Calmer evenings: schedule anything that needs chopping, simmering or a longer oven time.
• Days out: plan for a takeaway, a meal out or a deliberately easy option such as beans on toast.
• Weekends: give yourself one meal that is a proper cooking project if that is something you enjoy.

Write the plan with these notes in mind rather than squeezing them in later. A plan that expects a relaxed hour of cooking on your busiest day is a plan designed to be abandoned.

Make leftovers and batch cooking work harder

Leftovers are the quiet heroes of a workable weekly plan, and they deserve to be scheduled rather than hoped for. If you are cooking chilli, curry, soup or a grain-based salad, make a double batch. Eat half tonight, then decide now what happens to the rest.

Think in components rather than finished meals. A tray of roasted vegetables, a pot of grains, a batch of cooked chicken or a bowl of dressed lentils can become a salad bowl, a wrap, a frittata or a quick soup depending on your energy levels. This is the difference between eating the same meal three nights running and having the building blocks for three different ones.

Label anything you freeze with the date and what it is. A frozen meal you cannot identify is a frozen meal you will never defrost.

Build in flexibility for busy evenings and spontaneous changes

A weekly plan is a guide, not a contract. Leave one or two evenings deliberately unplanned — call them flex nights — so that an invitation out, a late finish or simply not fancying what you had chosen does not derail the whole week. Move the missed meal to the following week rather than throwing the plan away.

Keep a small "back-up shelf" of reliable options: tinned tomatoes, pulses, pasta, rice, frozen peas and spinach, eggs, a bag of frozen fish fillets. Knowing that dinner exists even when the plan does not is what keeps you out of the supermarket at six o'clock buying something expensive and disappointing.

Keeping it kind to sensitive stomachs

If certain foods leave you bloated, uncomfortable or rushing to the loo, a meal plan is a useful place to notice patterns — but it is not a diagnosis. Try not to remove whole food groups on a hunch. Instead, keep meals varied and built around fibre from a range of sources: oats, beans, lentils, vegetables, fruit, nuts and seeds, introduced gradually rather than all at once.

Some people tolerate smaller portions of pulses more easily than large ones, and cooking onions and garlic thoroughly suits some stomachs better than eating them raw. Others find that eating slowly, chewing properly and leaving a gap between the evening meal and bedtime makes a real difference. If symptoms are persistent, painful or affecting your daily life, speak to your GP or a registered dietitian before making sweeping changes. Gut health is personal, and there is no single plan that suits everyone.

The weekend reset: shop, prep, review

Set aside thirty minutes once a week — Sunday morning works well for many people — to do three things. First, check what is already in the fridge and cupboards, and build your plan around food that needs using. Second, write your shopping list by aisle: fresh produce, chilled, cupboard, frozen. Third, do a little prep if you have the time and energy: wash salad, chop vegetables, cook a pot of grains, boil some eggs.

Then, at the end of the week, spend two minutes reviewing what worked. Which meals did you actually cook? Which ingredients went to waste? Which evenings fell apart? Adjust one or two things next week rather than starting from scratch. A meal plan that evolves slowly and honestly is the one that will still be working for you in six months' time.