We just started with one meal to begin with (lunch) as that was the easiest. She wasn't eating a lot at first and it gave me time to get used to preparing food for us that she could also eat (frankly, at 6 months, we still weren't eating the healthiest as we were still getting used to the idea of life with a baby and cooking hadn't been a huge priority up til then). Probably around 7 months we were doing 2 meals and by 7.5 months, we were up to 3 meals a day, always 1-2 hours after milk. Though she was eating from the start, the quantity was still pretty small. It really wasn't until about 9 months that she really started to obviously eat for the sake of it and not just because it was something to play with.
I can't say enough good things about BLW. It's been such a wonderful experience (and the difference between how/what my daughter eats and what friends' babies eat, who didn't do BLW, is amazing). Yesterday for dinner she had roasted butternut squash and pearl barley 'risotto' followed by 4 whole pickled beetroots. Today, she had pesto and pine nut pasta. She loves olives, all sorts of pickled vegetables, seaweed, feeds herself a whole chicken leg, etc. She's a much more adventurous eater than even I imagined a 16 month old could be, and I really think doing BLW had a lot to do with it.