No, because the nutrients people eat are absorbed through the intestines. Diet tea is mainly diarrhea, and the nutrients you ingest will be discharged before they are absorbed by the intestines. Your body can't stand it for so long, let alone the nutrition of milk. Failure to keep up with nutrition will lead to anemia and dark yellow complexion. In fact, eat three meals as usual, be nutritious in the morning, eat well at noon, eat something light for dinner, and try not to eat noodles and rice at night. You can eat enough Chinese food.
The main thing is not to care too much, not to push yourself too hard, and not to look down upon it.