I use baby yogurt too, but in general, yogurt is constipating in large amounts... 4 ozs is a serving size for a 2 year old
Dad's don't do well with feeding baby when it's something new... My DH is still a nervous mess when I give DD pieces of bananas and other soft things
That said, I still forget to take a breath when DD gags a bit! My mom told me that it never gets easier
You will always worry about choking!
I just cut a yam up (the orange ones) into small fingers and toss with a bit of olive oil and then bake at 350 F for about 20 mins (I bite them to see if they are soft). Quite yummy and good for mom too