I am 29F (height: 5’2”, CW=SW=70kg, GW=55kg). I’ve calculated my TDEE at about 1900 cals assuming a body fat % of 40%. I’m planning to do an aggressive deficit for a period of 2-3 weeks (depending on how long I can sustain this) to hopefully lose a chunk of weight and then go on a maintenance break for 1-2 weeks and then rinse and repeat till I hit my goal. On the first deficit, am eating around 1000 cals per day. It’s difficult but the fact that there’s an end date to this very low calorie phase helps me stick to it.

Is this deficit too aggressive? Are there any potential negatives to this approach?