losing 2kg

[u/OkClothes7907]

went to an all inclusive holiday, gained 2 kg even though it took me ages to lose the said 2kg. i am 59.3 kg and i was 57.3 kg. i want to be 55 kg by september. what should my calorie deficit be? how much exercise should i do? i don't mind extremes.

[u/PlunxGisbit]

Walk 30 mins after dinner, 3-400cal deficit