Cutting out milk, cheese and yoghurt is the easy 90% of going dairy-free. The annoying 10% is everywhere else it turns up uninvited — bread glazed with milk, "dairy-free" chocolate that shares a factory line, sauces and dressings that lean on butter or cream for no obvious reason. That's usually what actually derails a dairy-free week, not the big obvious swaps.
The fix is the same one that works for most restrictions: decide the meals in advance instead of discovering the dairy mid-cook. This planner builds a plan around a dairy exclusion plus your calorie and diet targets, so every meal it generates is already dairy-free rather than something to double-check on the fly, and it hands you a matching shopping list. Set the dairy exclusion above and just try it. (Worth saying: if it's a genuine allergy rather than an intolerance or preference, still check labels yourself — the planner keeps dairy out of the meals it suggests, it can't check what's actually inside a packaged product on your shelf.)