I’m so sorry that you’re finding overwhelming.
At 7 months it’s ok to offer food once a day or even skip a day.
As a PP said, you’re aiming to introduce the 3 time between 8 and 9 months, taking baby’s lead.
For breakfast, there are some really easy things you can give her:
Make a batch of blueberry pancakes. It’s a lovely weekend breakfast for you both and you can freeze the left overs to give her on other days.
Eggy Bread cut into soldiers
Ready Brek
A banana. You can split bananas naturally lengthways into 3 making them easier to hold
Leftovers from the night before, it doesn’t have to be what we view as breakfast food. She has no conceit that you don’t normally eat chicken korma for breakfast.
One egg omelette cut into strips.
For the other meal, I’d recommend giving what you’re having. So if it’s lunch, do you usually eat lunch? Is it suitable for her?
If you’re going to offer at tea, can she have sone of the family meal? My DD loved a roast dinner at that age.
I’d recommend getting the Gill Ripley cookbook. It’s so much easier feeding baby if you’re all eating more or less the same thing, afterall, you’re already planning and shopping for your own meals 
With the anxiety over choking, is there a particular reason that you’re worried? Have you done a Paediatric First Aid course? Choking on solid food is quite rare, I’ve only known a child do it once and they were 3 at the time.