My son went through the same thing; regressing a little at that time. Don't worry; it is just a phase and will soon pass. Try 'soft' solids, at least some of those worked for my son. He seemed to only want to pick things up and feed himself-- didn't want any help from a spoon. Green beans, corn, any soft veggie, etc. I also let my son have frozen veggies as he liked to suck on them for the teething and then he'd eat them as they got softer. Cheese, pasta, etc are also good. Just depends on what he will like at the time. (they all refuse from sometime to another). Watermelon is good this time of year as well.
If it is something he really likes, he will eventually take it again from the spoon... just takes time for this 'phase' to pass. Good luck!