And why are you frustrated? People ask. So what? Children dont' need anything nutritionally besides breastmilk for AT LEAST a year. And really would be fine longer. There is nothing for you to feel bad or ashamed about. People are going to ask about whether on not he STTN too. Them asking about it, isn't going to make it happen any sooner. But it is no reason to feel bad or frustrated. :hug
I started letting DS play with food around 5 1/2 months, but not actually having meal times or anything. He didn't eat any of it.
We tried to do baby led solids, but my day care provider wasn't cooperative and DS learned from her to just wait for you to put the spoon in his mouth. Before I had been handing him a spoon with rice cereal on it and he would put it in his mouth. With day care's influence, he stopped doing that. So now I just feed him. We're starting to let him play with solid solids, like a piece of bread or whatever, but its hard because none of the food we eat is what he should be eating. We have light, lo-cal, non-organic stuff mostly and I don't want him having that until after a year.
When you start solids, just watch his poops. If your LO starts straining or having firmer-than-normal poops (regardless of frequency), you should try easing up on the solids and seeing if that helps. DS was doing so good on lunch and dinner solids that we tried breakfast for a couple days. He loved it, but his tummy didn't do so well and it took us a week and a half to get him back to normal poops.
I have not read through the other posts, but in my opinion, the following link is worth reading before starting solids. And I definitely wouldn't recommend starting solids before at least 6 months of age and then only think of it as an introduction to solids without replacing any breastmilk.