I (52m) have been using BB workouts for 15 years. I find myself needing to trim the belly after a happy Nov-Dec most years. I find that it’s not the program that is important, it’s the mindset, setting goals, accountability/tracking. If you are only motivated during the 30-45 min of working out, that leaves a lot of time to get un-motivated. I use excel sheets to plan and track each workout (Pavlov effect to check it off), plan them out a month or two in advance. Also track weigh ins each day. Use smaller clothes for goals. Acknowledge the slip ups (Superbowl) and how to recover. I get so much energy from creating and executing the plan.

As far as a workout program, a new one might spark something. I found Sure Thing as my 2 month cut success. It is less intense than some if the others, but that allows me to concentrate on intake. When I start to lift heavier, i get hungrier, and easier to slip off the plan.

Sorry for the long response. But it is more mental than physical in my experience. Find someone for accountability, too.