Hi! Wanting to lose 20-25lbs by June, possible?

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hi everyone! I'm a mum of one working evening shifts, I weigh currently 10st 12.5lbs and wanting get down to 9st 7lbs at least by beginning of June for a holiday, I'm 5ft 6inches, I don't have money and time for gym but have downloaded Sworkit Pro and aim to do something on it each day, I normally do nothing (pretty unfit). Do you think it is possible to get do this target? I'm doing 1200 per day. Thanks in advance guys! Feel free to add me xx