I trust that is the reducing diet then.
A lot depends on some of the vague descriptions you give. How much skimmed milk, a paint, a ¼ pint ?
How much mayo on the sandwich, and is it full fat or reduced like the Hellmann's Light ?
What is a reasonable sized bowl ? How much pasta, and more importantly how much high fat sauce ?
The problem is that a calorie counting diet needs to be calculated with reasonable accuracy as it is surprising how much one can put away without realising, if one is just guessing. Most packet stuff has nutrition info on it. Where it doesn't you can probably Goggle the answer for the individual item. Weigh stuff you pour freely, and be honest.
Guess, and you'll fail to keep the figure down, and will then feel hard done by when you think you've stuck to the diet and yet not lost anything.
Aim for about 2000 calories a day.. Too few and you'll keep wanting to cheat, and your body might go into starvation mode anyway, and store away a greater portion of the energy you eat. Too much and your not going to have a larger output then input, so won't lose. Slow but sure is the way.
Ideally you want to develop habits you can continue with afterwards as the worst thing to do is lose then regain then lose etc.