Here is a question for you: What is your plan to maintain the weight loss once you go back to eating 3 regular meals and a couple of snacks per day (which is what we need to eat as part of a healthy nutrition plan)?
Using a meal replacement shake to get into a slight calorie deficit is great, but it is a band-aid. The only way to maintain a healthy weight and fitness level is to increase your exercise output to a level of moving your body DAILY, and eating healthy whole foods in the right amounts.
Shakes can be a great supplement, but any plan to calls for 2 shakes per day and one meal, which is what I've read the BBV plan is, is just a yo-yo diet in the making. It's what has caused people to lose then gain weight for decades.
Healthy weight is all about healthy permanent habits and lifestyle. So if this helps you get where you want to go that's awesome, but get a plan in place to take over from there unless you plan on being on the 2 shakes and 1 meal plan forever.