This worked for me great:
RDI/ETB: max. -500kcal/day
(not less than 1.200kcal/day because of starvation mode)
A lot of water, fibre.
(to keep my tummy busy and full)
(to build up new cells and muscle)
2-4 workouts per week.
(each <1hour: jogging, spinning, circuit training and weight training)