Well done! fantastic effort!

How do you feel and how are you getting on with it now as part of your daily life?
Yeah I'm trying to educate him on nutrition, it's been a long term thing (we've been friends for over 2 decades...). Thing is I'm a poor example as it's integrated into my life (I've been a gym rat and athlete most of my life), so it's hard for me to empathise sometimes.
I took him under my wing, gave him nutrition plans, training plans, but he loses interest very quickly. His mindset is opposite to mine as I'm always fitness / health over quick pleasures, and am very disciplined, he KNOWS he has to change his life, but struggling to get that discipline. Hence my question about your experiences (in this thread) as I wonder if he saw changes in him he'd start to focus more. I care about him and I just want to help, but 20 years of struggle is frustrating (I feel frustrated for him!).
Going to reply here to be on topic
Cutting out sugar was simple for me. Definitely recommend That Sugar Film (2014), eye opening in that sugar is in so much UPF (where it rightfully shouldn't be) and how even by itself without other UPF crap it hurts liver and metabolism.
And suddenly snack craving was gone
Intermittent fasting 16:8, skipping breakfast felt so natural. Discovered how actually feels to be hungry and how you could go a while between meals, just "I'm fine" feeling.
Keto was a natural progression. Cutting carbs meant there were no energy swings, sleepiness after meals. But an average person needs a lot of convincing that cholesterol is not a horror dangerous thing. And I always loved meat
Once I upped protein, had a 6months weight loss plateau but also the most drastic body recomposition. Literally weird effect of fat turning into muscle, I would never believe hearing it from someone else.
As far as workouts, very minimal. Try to have a walk 30-45min a day. Some 5-10 min weights for upper body. Thats it.
Whole aisles in shops don't exist for me, breads, cakes, pasta, rice etc. One or two meat based meals with some greens and greek yoghurt. Nothing is simpler to cook than mince beef or eggs.
I wouldn't want to eat in any other way, but I admit keto is not for everyone.
IF should work for anybody. It working is usually attributed to natural reduction in calories, but it can't be all of it. Hunger signals work better, fasting helps mobilise your own fat for energy, better gut health and more.