Just like any skill, it will take a good few tries before the baby actually know it's "food" to eat. I tried blw on my girl and I notice she was more receptive to hold certain food - brocolli, zucchini, apple, bread, cauliflower - and less in favour of holding banana, potato, sweet potato (basically she will hold and drop or hold and throw). Not sure if it's the texture or taste.
Nevertheless, just continue offering if you would like to head towards blw way.
Btw there's a blw fb group you can join to ask questions or pick on recipe ideas. Here's the page
https://m.facebook.com/groups/1412241078993710?ref=bookmarks