I've found the easiest way to maintain my macro ratios on Keto is to just drink heavy whipping cream for breakfast - it's almost pure fat, and 1/2 cup is about 400 kcal. It's slightly sweet and has little or no oily taste, so it goes down much easier than coconut oil or butter. Even when I'm adding it to coffee, I prefer it over butter.

For a quick snacky lunch, I love celery and cream cheese or, depending on what mood I'm in, celery and mayo.

This makes it sound like the reason you are losing weight isn't the keto diet - it's the lower calorie total. Ketosis is the framework you are using to stick to it, not the method itself.

The result is the same for you, but that does mean there's other ways to get to the goal than the keto diet. (which is good news for everyone)

3 tbsp sour cream is one gram of tasty carb. Dairy isn't very paleo but I'll indulge sometimes.

1/4 cup of guacamole (depending what you added) is about 4 grams of carbs, probably affordable.

Both are about 100 calories.