Welcome PDG,
Your question is common, in fact, some believe there is only "one golden shot" at being successful at LC. Dr Eades has written a good series of posts explaining why that is not true, and also why it may be harder the "Second Time Around"
https://proteinpower.com/drmike/201...w-carb-dieters/
First, beside just being older, is that we tend to remember what we ate later in the diet plan. Are you really following the Atkins induction phase as long as you did before? Or have you already added nuts, more cheese, or alcohol? Or have your reward meals on SB become more generous as they would have in later SB phases, not the first phase? First suggestion is to re-read ONE plan and stick to all Induction rules so you get the benefits of the Induction phase. ("Custom" to me is a red flag that you are adding foods, eating at higher carbs levels, or in more quantity than you think you did in the past)
Do you now have a healthy way to manage your stress? Alcohol will stop weight loss, suggest none until you reach goal weight. Can you have Breaks in your work day? Walking rather than lunch? etc.
It certainly doesn't help that your wife is not happy with LC, do you make separate meals? This will be a another stress unless you get her on board, or at least not actively discourage it. Although this other thread about support from wife
http://forum.lowcarber.org/showthread.php?t=443909 reminded me that even Gary Taubes doesn't have his wife's support..she's a vegetarian.
Dr Eades as other good reasons to consider why the Second Time Around is harder (not impossible) in his posts linked above and the comments by readers are extensive. See if any apply to you.