Having gone through something similar in the last eight month’s or so - weight loss since February currently 15kg - IMHO the training plan is only one part of the journey, I changed the way I eat. I was doing unstructured training with hard outdoor sides, between 1 to 3 hrs a couple of times a week. As Matt often advises in his book’s, I improved the quality of my diet. Mostly stopped drinking alcohol and reduced treat foods (covered in the Endurance Diet). For me, it is more a way of life regarding the eating. I have recently started structured training, completed SSB1 initially started with low volume switched to mid volume as I found I could handle the extra workouts, I did see an increase in appetite so stalled on any further weight loss for the time being.
Not sure if any of this is helpful, but good luck.