Can i lose 3-5 kilos by end of this month?

i have lost 3 kilos in the last couple of weeks due to healthy eating and some exercise. is it possible to lose up to 5 kilos by begining of april? i have eggs whites with low fat bacon for breakfast, lunch is a prawn or chicken salad with low fat dressing, dinner is another salad with either grilled chicken or just a plain mixed salad. and i have a weightwatchers yoghurt for snacking and tea with no sugar. is this good enuf to lose around 1 kilo a week?