I'm a year and a half out. I would tell you to definitely use a tracking app (MyFitnessPal was mine) and a food scale. You'd be amazed how little or how much 2.5-3 ounces can be, depending on the food! Start small with portions and don't try to push yourself. Seriously, a quarter cup is not a lot of food, but at the beginning it will be! (that doesn't last, don't worry). YOu will find that some foods fill you up much more than others. I can eat a lot of salad greens. THat makes sense due to water. But ground beef vs chicken or eggs - big difference. Eggs and chicken fill me up faster.
Get in your protein and take your vitamins. Vitamins are relatively easy and will make a huge difference in your health. Walk. YOu don't have to run marathons. Just walking will help.
Re sweets. Don't keep them in the house if you can. I find that if I'm really craving something, getting something out, preferably splitting it, helps me. But, if it's something that's likely to cause you to binge or crave carbs later - don't do it. That is a bit different for all of us. After 6 months I started incorporating small amounts of carbs back into my diet. I find it helps me in the poo department.
BIGGEST TIP! Use these sites for support and tips. However, this is YOUR journey. You, your situation and your physical and mental health history are different than everyone else. If someone tells you to go keto and it's just not something you can sustain - it's not for you. YOu have to find your own path. Don't compare yourself to others. Some lost faster than me, but they started out in a different place with a different body and issues. Find your way and don't give up!