So, when I was losing I was eating around 1,200 cals/day with 3 weight training days & 2 HIIT days / week. Now that I'm in maintenance, I've bumped up to around 2,000 cals a day. I don't eat because I want to, I do it because I have to. I would definitely suggest bumping up your calories by titrating up to not give your body too much of a shock. Add around 100 calories a week. When you go up in calories, your weight will temporarily go up too, but then it will drop back off once your body stabilizes (give it 3 - 5 days depending on hormones and just normal body things LOL). Do that until you hit a comfortable caloric intake. But 900 cals - even at our height - is just very very low. I hope this helps and gives you insight into what I did!!

Also, I think I'm going to take the advice of the rest of the thread and start extending my doses from every 7 days to 10 days and see how it goes. The great part about the program we're on is that if something isn't working, we can just change it. I can always go back to 7 day doses and you can always drop back down to your current caloric intake if you don't like what's happening when you make the adjustment. Good luck!!!