You're not eating much veg at all, breakfast - so it's very, very low carb. You don't need to go that low, and you need the nutrients from veg so I'd definitely suggest that you up that.
The taste in your mouth, although not pleasant, is a good sign though - it means you're definitely in ketosis. It should be temporary. In the meantime, drink plenty (even more) water, keep your fat levels high and also make sure you're getting enough sodium, magnesium and potassium - key electrolytes. So make sure you cook with salt, and add it to food. Salmon, spinach, avocado and full fat natural yoghurt are also good things to include in your diet.
But you also need to be aware that it's very common for weight loss to slow/stop in weeks 3 and 4. It's nothing that you're doing, it's just your body adjusting to things.
All sounds like it's going very well so far, so keep on keeping on! 