My 13 month old took until around 10 1/2 months to actually eat food besides breast milk. He skipped baby food altogether and now eats regular food cut up in small bites. Some days he eats well, other days I can only get a couple bites in him. We, too, still breastfeed, which I plan to until we both decide to wean. I'm glad I continued breastfeeding because it helped me feel like even though he was slow to eat solids and had days he hardly ate anything, that at least he was getting breastmilk. I also give him vitamins so I felt like he was getting vitamins each day.
What I have found is all you can do is offer healthy food, a variety of food, and find creative ways to serve it. My son also likes to feed himself and allows me to feed him, but no utensils. So if you are using utensils, he may not want them for awhile and only want to use his hands. Also, I have found that he REALLY likes certain foods such as peas and crackers. So, when he is really fussing and refusing food, I put some crackers or peas on his tray, and he magically starts eating them. There is other food on his tray and then it's as though the crackers are a "stimulator" and he starts to eat the other food, too. I read in Dr. Sears book that this is an idea that he endorses. So, maybe find a food he really likes and try this idea.
I also, as others have said, do not force food in any way. From what I've read, this leads to big problems down the line. According to Dr. Sears, it doesn't matter what toddlers eat each day, it's what they cumulatively eat during the week. He also says what I said before that as a mom, your job is simply to offer healthy food in a creative manner and it's up to him to eat it. It's hard for us not to worry, though. I've tried hard to just relax on the days he refuses to eat and say "there's always tomorrow"!
Also, I recommend a book called "My Child Won't Eat" by Carlos Gonzalez. He talks about how we worry about this issue when we really shouldn't. He'll eat when he is hungry and won't starve himself. I've learned to pick my battles and food won't be one of them!! Good luck!
Oh, one last thing. My son is too smart for his own good and maybe your guy is the same way! I think that your son could possibly be connecting that you are trying to wean to food? Maybe hold off on weaning for awhile and see if that helps. I've noticed some days when my son doesn't eat that he seems to want to breastfeed more. Maybe wean more slowly or try again in another month or so to see if there is a difference.