Does the one meal a day diet count if you drink a lot of tea to stop urge of eating?

I'm female 5ft 2 and 14 and a half stone. I have started the one meal a day diet as i need a lot of weight gone in 3 weeks time . I excercise for 4o mins each day and eat around 3pm daily . I am wondering is it ok to drink cups of tea throught the day to stop urges of eating ? My tea also involves milk and 2 sugars .