What do I eat?

I have an interesting development as I age. I have suddenly begun to eat much less. I get full very quickly, and I stay full for hours.

I do not want to add an ultra-processed food like Ensure or Boost to my diet. I much prefer to eat real food.

My best friend, a chef, recommended cottage cheese. I remember my mother eating that with maraschino cherries mixed in. He told me about deluxe jarred cherries available at Costco that sound delicious.

I would probably prefer to eat yogurt. I like it, and I like mixing things in it.

What are foods that I can add that are sources of good nutrition and are easy.

IMPORTANT I am a lacto-ovo vegetarian. I eat no meat, and I avoid those cheeses made with rennet enzymes like traditional Parmesan cheese. I love all other dairy products and eggs.

I’m asking this, because I had a regular check up with my doctor yesterday, and he literally asked me if I’m eating. I’ve lost weight.