Why not just say, IF asked:
"I have some personal issues going on in my life right now that I am NOT at liberty to discuss."
I will also comment on that 970 calories a day. If you talk with any dietitian or Dr they will tell you that, any diet that is below 1000 calories for females and 1200 calories for males is very hard on your body. Makes your body think it is starving and thus the body will start to retain what it can which is usually fat.
Of course with the calories in booze it would also be hard to maintain a healthy food regimen.
I am glad you are willing to try this again. You can do this, as many on here have done, and you will be amazed at how great living sober is!!!
Love and hugs,