Weight Loss Stalled - HELP!

So I had about 25 pounds to lose. I lost 12 pounds pretty quickly. But now I have been stuck at the same weight for 2 1/2 weeks. I'm doing Keto with the guidance of a doctor, who I really like. I started about 7 weeks ago. I track everything. Per my doctor, I should be at 1200 calories a day and 1400 calories a day on the days I workout (I do a kickboxing program 3-4 days a week). I've been right on in my calories, have not cheated once, and use the Keto strips that show I'm in ketosis. But I just stopped losing weight.  My doctor suggested having a "cheat day" to throw my body off, then go back to keto. By cheat day, he said he meant just add a couple of apples one day to my usual day. He also suggested I do this not on a day I workout, but a day before I workout. I did that - two Gala apples as snacks, rest was all the regular food I eat. Nothing happened. I'm starting to get really, really frustrated. I don't eat anything processed, so it's all good food - fresh, grass-fed, usually organic meats and veggies. This is what I ate today- eggs and bacon for breakfast, roasted chicken thigh (with skin) and broccoli for lunch (leftovers from last night), beef lettuce wraps with avocado and some roasted cauliflower for dinner, 1/4 cup (I measured) of walnuts for snack. This is a typical day, but I'm not losing any more weight. Does anyone have any ideas or suggestions? Thanks!