Nice. I'm a big fan of eating ####ty foods on my diet. Instead of thinking "I need to avoid snacking", I think "i know I only get 1500 calories today and I will probably want some snacks after dinner, so how can I cut down on my early day calories and/or exercise enough to earn those snacks".
I dont like treating snacking as a separate thing that I sometimes do but will try not to. It's a built in excuse. You are planning for failure when you say that your challenge is post dinner snacking. Plan to snack. Build your day around it and satisfy that urge. Make sure you are completely aware that you can do the same thing tomorrow or Friday or any day you want, but it involves sacrifices earlier in the day that you don't always want to make. Then when you eat a big breakfast on Thursday, you just say, ok, no snacks tonight, and it's not a challenge, it's just you choosing when to spend your calories each day and today you chose breakfast.
Some days I eat like 5 or 6 mini meals. Some days I eat a 1000 calorie dinner. Sometimes I'll buy a sack of hundred calorie packs of doritos and cheetos and have one when I'm itching for it. I don't feel the need to cheat because I am in control of what I eat and even if I don't have enough calories for that thing I'm craving tonight I know I can have it tomorrow if I really want to. Using myfitnesspal helps me stop looking at this as a long term goal thats totslly daunting, and instead see each day as a simple, achievable goal, where every day I can choose how to meet it.
If I can make one suggestion- try something instead of those bars once in a while. I'm a big fan of Icelandic skyr yogurt, 130 calories with 15g protein, plus 2 servings of fresh raspberries, about 90 calories and 20g fiber. Compare that with your perfect bar at about 300 calories, 19g protein and 4g fiber and you're saving 80 calories for better macro nutrients and at least to me it tastes good. If you can cut those 80 calories from breakfast, maybe 120 from dinner, you can have that 200 calorie cookie later.
Just some thoughts, feel free to disregard. I'm legit excited to have you and otis in here giving this a real shot again. But reminder that I am not a doctor and this is not medical advice. Consult your doctor before beginning this or any diet or exercise program.