I'm curious if you've ever gone in for a DEXA scan to determine your body composition. I ask because I know that if you've been obese for a long time, your body architecture has changed to support that weight, and that isn't something that just goes away as you lose fat. BMI, which is problematic at best, can be skewed by formerly obese people weighing more because of extra bone and organ mass that a never obese person of similar height and build would not have. If you have a DEXA scan, you can get a much more reliable idea of how much body fat, bone mass, etc., you have and may feel a lot better about your progress.
I would also take a step back and ask yourself why that number you've set is important to you. If you "only" lost 25 more lbs, you would have lost half your body weight. That's kinda crazy! You would be half the person you were before (in a good way, of course). Or if you "only" lost 10 more pounds, would it really be so bad? Would 40 lbs really make a massive difference in how you look and feel compared to where you are now? Are you putting so much pressure on yourself to reach an arbitrary number that you don't fully appreciate just how amazing your progress is? You're down 110 pounds! That's like having an entire Olympic gymnast you are no longer dragging around on your back every day.
Regarding your energy levels, are you getting enough fruit and veg? If you're still really low carb and really low calorie, as I seem to remember your dietician was having you do, that might account for the lack of energy. It could be your body is needing more fuel than you're giving it and is lacking the phytonutrients that don't come in a multivitamin.