Been 80-90% for a while ... but getting sick regularly and not losing weight

Decided to re-evaluate and aim for 100%

current weight: 148 / 67kg
goal weight: 120 / 55kg
height: 1.62m
age: 39

started 2 days ago:

I have a tblsp coconut oil and a glass of water after i wake up

breakfast is normally a 2-3 egg omlette with black coffee sometimes with a fruit (1/2 banana or small peach)

lunch is grilled chicken/no carb fishcakes with salad: rocket, cucumber, tomato, handful nuts and a tsp dried pomegranate arils

Had some coffee with cream

Supper was hake fried in butter with chillie and garlic and a bit of green salad and for dessert a handful of blueberries with heavy cream

I drink lots of water and herbal tea throughout the day - i have a maximum of 2 cups of coffee a day

I exercise 3-4 days a week:

Mondays, Wednesdays and Fridays Im at the gym doing weights and HIIT on the stepper/bike - i want to try some yoga also soon
Saturdays - I walk the dogs on the beach ... and try some sprints (or rather i get them to pull me on their leash which normally results in my version of a sprint)

Will continue as is for a bit - been having a bit of carb flu - headaches etc so once this eases off I'll incorporate some IF