sounds very similar to my 18 month old. he is smaller. typically around the 25th centile now used to be 9th.
that comment about regulating food over the week makes sense actually as some days I feel like all he does is eat and then other days it's a more manageable amount.
I have often worried about how much he has but then I do think toddlers are pretty good at self regulating as he will turn food away when he doesn't want it.
we also struggle with salad items and veg on its own which leaves me a bit stumped at snack time sometimes and also revert to toast and carbs more than i would like but I guess they are still exploring foods and it will take time to work up to a full varied diet so I just try to keep offering and not get too stressy over it.
typical day for us for comparison looks a bit like this.
6.30am breastfeed
6.45 am ready brek about 25-30g, followed by banana and either toast or yogurt (at about 8.15am at nursery)
11am - snack either fruit, yogurt, toast or crumpet depending on what he had in the morning
at weekends he might have a brunch with us for his snack so will have things like scrambled egg, smoked salmon, mushrooms and toast (trying to sneak spinach in there too)
2pm - lunch typically leftovers of our food from freezer. something like cottage pie or pasta with veg mixed in and finely chopped. so mix of protein, carbs and veg. all homemade
usually followed by yogurt or fruit.
(on nursery days times for lunch and snack are swapped round)
4.30pm - dinner tends to be leftovers from freezer too but something different from lunch.
6pm - breastfeed and banana, crumpet, or yogurt. sometimes two from above.
some days he will have more breastfeeds throughout the day and additional snacks. as I said I struggle a bit with what to give for snack and rely far to much on fruit, yogurt and bread type foods.
water is on constant hand and he will drink regularly throughout the day too.