Exactly as it is right now. I promise, the only magic that will happen in a week is the best 'Mothers Day' ever (they only THINK it's their birthday... really... it's where we get to get all gushy about them). Developmentally and diet wise... there will be no drastic change at all. Not even a little one. It's a process.
Just start slowly adding in more things. Just as you have been doing! :)
My own son, we just *started* solids at 1yo, and we kept on formula until well over 18mo (fast grower, he needed it). By the time he transitioned completely to solids (that slow, gradual process of following their cues and what works and what doesn't)... he was eating every 3 hours, and drinking milk fairly constantly. We fed on demand as a baby, and it just worked out so well that we continued that until THIS year (when he went on meds that make him hungry ALL the time. Oy. But that's a temporary thing).
It was a fun thing to watch. Nutritionists recommend that we ALL eat small meals every 3 hours or so, instead of gorging 2 or 3 times in a day, and that was exactly the pattern he fell into. Small meals every couple hours. To make it easy on myself, I just saved leftovers. As in, I cooked him tons, and whatever he didn't finish went on his shelf in the fridge for later. It was accidental, but it worked out GREAT as both portion control (aka only eating until you're full), as well as "tells" on when he was about to hit a growth spurt. Because when he was about to start growing, he'd PACK on the food. Whoa. It's all gone! Okay. Time to start cooking more!
I just fed him the exact same things as I ate EXCEPT... from starting solids until apx age 2... there's a neurological thing that happens: The brain registers all chemical signatures into a "library". They have to eat them at least a few times for a chemical to "stick". Then, at around age 2-3 any chemical that hasn't been 'registered' gets tagged as "Poison" and initiates a Gag! Yuck! Spit! It! Out! response. It wears off at apx age 5-6.
You know the "picky eater" thing you hear about toddlers? 99 times out of 100 it's because parents gave their kids bland 'toddler' food... and by the time parents were ready to start introducing more... their child's brain had already switched over. YES it's important to introduce new things carefully for allergies, but DO introduce lots of new things. Otherwise you're looking at a diet of unseasoned chicken, bread crumbs, 4 veggies, etc (the list of gerber toddler foods is about 11 items long) for then next 4-5 YEARS.
So we spent all of that year "travelling the world" as far as food went. It doesn't matter if it's cilantro in chinese, mexican, salad... once cilantro gets tagged as "food", it's there to stay.
So go WILD on the spices, herbs, seasonings, cheeses, sauces. Get creative. It can be fun to see what kids reeeeeeeally love. Just tone down the heat on spicy dishes, but introduce as many chemical signatures as you can!!!