Yeah, sadly, those heady days of a high rate of weight loss don’t last. You can always depend on your weight loss slowing the closer you are to goal. You’re eating more (which is a normal progression) & getting closer to the number of calories your body needs to maintain your weight.
As @catwoman7 said how much food you eat depends on the food you’re eating. A good place to begin is to look at the recommended portion sizes of different foods - start with google & quiz your dietician on what is a serve of beef, of chicken of vegetables, etc. You’re probably getting to close to a recommended serving size now. The problems only start to arise if you’re eating more than that & the only thing that will stop you eating larger portions sizes is you. Plus check the calories of what you’re eating & the nutritional content if you’re not still doing this. 1500 calories is 1500 calories regardless of whether it’s from nutritionally dense food or from cake, sodas, chips, pizza, etc. I eat more often & eat more food in a day now than I did when I was obese. It’s just more nutritionally dense food & my my metabolism is working better.
As to what’s bad: carbs, fats or sugar? I think this is a personal thing. You know your medical status which would influence whether you should keep your fat intake low or not. You know your weaknesses - sugar, carbs. I think we should work out a lot of our eating plans based on these things about ourselves. There are recommended daily allowances for fats, sugar & carbs too. Generally, I’m a bit of a balanced diet person. Though I don’t eat a lot of carbs & only multi or whole grains - I used to eat a lot of bread, pasta & rice. I also avoid a lot of sugar, artificial sweeteners & sugar substitutes because I think sugar is the real devil. I get my sweet from fruit.
I don’t have dessert as such but have eaten chia pudding (flavoured with vanilla extract). I’ll have a protein bar after dinner if my protein is a little low for the day or will have fruit.
How I feel real hunger is very different. I feel restless & I don’t crave a specific food or type (salt, sweet, carb) of food. If my ‘hunger’ is craving something specific it’s head hunger & not real. If there’s an emotional component to the ‘hunger’ (like hangry) it’s not real hunger.
Part of the ‘fun’ of maintenance is working out your calorie & nutritional needs. It took me a while to work out what mine was & to be physically able to eat that much food. But you have to find a balance too. If you have to have such a restricted diet to maintain that it compromises you enjoying your life, it’s doomed to fail. It’s about sustainability. If that means you end of weighing a little more than you thought you wanted to be, that’s ok. If you enjoy your latte every day enjoy it. If it worries you try a smaller serve or reduce it to one a day or three cups every two days. There’s always work arounds or substitutes you can make like zucchini noodles instead of spaghetti but still enjoy what you’re eating & not feel like you’re missing out.
The truth about exercising is that it will only contribute to 10-20% of any weight you want to lose. Want to lose 10lbs? Exercising will only contribute to you losing 1 or 2 lbs. Plus if you increase your exercising, your hunger will increase.
Unfortunately the work doesn’t the end. All the best.