Sirenz, when you say he chokes what happens exactly?? I know it is scary but we have been giving ds whole foods from day dot & the first few times he swallowed bits that were too big for him & he gagged & eyes watered & brought it back up. Now he does it without making a sound but doesn't do it so often.
I do notice he is worse when he is tired & often when he is tired I have to cut the bits into chunks & put them in his mouth otherwise he just squishes the food. For us he 'got' the swallowing thing from eating milkarroroot biscuits cause it would brake off in chunks & he would bring it back up & he had to gum, at the time he didn't have any teeth, he now has 2 bottom teeth, you would be surprised how strong their gums are (not suggesting you give him raw carrot but YKWIM hopefully)
With bread, do you give him bread? is it white bread or seedy bread because strangely enough white bread can be worse cause it forms into a ball easier & can get stuck to the roof of the mouth easier where as seedy bread breaks down due to the seeds. I cut ds toast into finger size bits.
HTH