We are doing a similar dietary change as part of the Whole Life Challenge, (fall challenge) for 6 weeks. you can pick a diet level. There is a very strict level, a medium level, and a level that seems like pretty much how we mostly ate when we don't go out anyway. We are doing that medium level, that is very much like the Whole 30, but allows brown rice and eggs. Based on experience with doing the more strict anti-inflammation cleanses before, brown rice is ok with my system, and helps me stay on track as I need some carbs for my athletics. It allows peanuts too, but I am finding that I think minimizing peanuts and peanut butter is a good thing for me, though I really love peanut butter. Also, the diet allows dried fruit without added sugar. In the first week, I found I overdid those too. This second week, I plan on eliminating dried fruit to get the weight loss going better. I also know from experience that removing dried fruit speeds up the weight loss for me. I am down 4.5 lbs after a week on the program.
My deal is I want to develop better habits over the 6 weeks so that I can have a sustainable daily life, and maybe a cheat day once a week allowing a non-compliant something, such as a good beer, or a bowl of popcorn, or chips and salsa. But really reduce such things on a daily basis, and not slide in to eating that way all the time. Then do cleanses/resets twice a year or so to keep things in check and on track. I think that can be a good plan for me in my 50's when my metabolism and exercise no longer make up for poor eating choices on their own.
Along with the diet, you get scored, either individually, or as part of a team, for engaging in daily exercise, stretching/mobility, meeting sleep goals, (a huge one for me, everything is better if I go to bed earlier), mindfulness/well-being practices (you try different ones each week so you pick what works for you) hydration, and a reflection at the end of each day. None of the goals are supposed to be huge. Just an improvement in each area for you. Trying to get all of them done each day for 6 weeks will be a good re-set on habits, I hope. Especially sleep, mobility, and mindfulness. I already did ok on the others.