I'm 5ft 1, 8st 2 (ish) and a size 8. I wouldn't really say I'm petite, so maybe don't qualify. Just short and normal weight, but actually a bit stocky?
I eat about five times a day, but not huge amounts at a time.
Breakfast usually Greek yogurt with seeds and berries. Sometimes bran flakes or overnight oats.
Snacks (two a day) usually fruit, but also rye crackers with almond butter, and a fair bit of chocolate these days, and random other bits (I'm really into salty seaweed thins right now).
Lunch is often one large slice of rye bread, or a small bread roll, with some combination of things like avocado, egg, cheese, ham, sauerkraut, cucumber, tomato.
Dinner varies a lot. Yesterday we had sausages with sweet potato wedges and salad. Today will salmon, potatoes, and what's left of the salad. Fairly common for us to skip the startchy sides (potatoes, rice etc) for veggies, but that depends on how hungry we're feeling.
I drink black coffee and herbal teas mostly, but am not tea total at all. In fact right now probably drinking a few too many rum & cokes a week.
I do 10,000 - 16,000 steps a day with some form of exercise on top of that every day (gym workouts when those are open; home workouts atm, some weights and some cardio, some yoga for flexibility). I'm in my 40s and feel quite well in myself physically.