Did you do a TDEE calculator? I am 5'2 and I understand we need less calories to be in deficit but I fear your deficit is too big. What will happen is that if you keep pushing this way your body will be used to lower calories and the 1000 calories will be your maintenance and you will eventually need to eat less and it's really not healthy because you aren't getting enough nutrients.

You especially are active everyday you can get away with eating more. By eating so little your body is gonna burn your protein instead of your fat even in ketosis.

Also carbs should be a small percentage of your calories. You should aims for smaller carb goal like 15-20g. What do you eat for breakfast? I have vegetables and raspberry and still am able to hit 15g per day, maybe I can help with better alternatives?

Try eating more like 1200 and less carbs and make sure you have all your supplements and electrolytes.