Losing that much in a month can’t be good. You want to focus on losing slowly. And I know the whole I don’t have time thing because I went through it… And it wasnt until I hit rock bottom after living through that unhealthy lifestyle that I wanted to change. Cause if you lose weight too quickly and unhealthily then you’re going to gain It back quickly. It’s harder to do it slowly but the results last for longer because you develop a healthy lifestyle and training routine that becomes your life and not a chore. If you know what I mean? The quickest, healthiest way you’re going to lose weight is eating healthy always and doing exercise. But allowing time for rest so you don’t get run down. I hope this helps. You just want a sustainable lifestyle, it will give you the best results and they will last.