oh i'm super-happy to answer questions about BLW, just not to defend it, that's all.
tbh, if you can rid yourself of the whole idea of failing that would be really useful. remember, the goal is to have a happy baby with a healthy attitude to food, as well as a happy mum, regardless of how you get there. it's not a challenge, it's just a developmental stage...
for me, i liked the laziness of BLW, the fact that i didn't have to spoonfeed and could eat my own dinner in peace and everyone could enjoy our meal. i'm forever bobbing up and down from the table anyway, grabbing water, condiments etc, i can't imagine having to be stuck spoon feeding my baby. lots of people find it a downright pleasure, but i don't think i would have past the first few exciting weeks.
there may be some other benefits to BLW, but no-one really knows so at the moment you just have to weight it up with yourself. will your anxiety at if your baby doesn't eat actually ruin your own pleasure in food, for example? some would say (and i'd probably agree with them) that having an anxious mother around food is less beneficial than one who feels better knowing that she has given her child a set amount on a spoon. long-term, who's to say what's better?
for me, it wasn't an problem, i don't have issues with food, i knew i could really not bother about her intake and i thought that was a blessing. but not everyone feels that way, or has such an uncomplicated relationship with food.
the funny thing is that in a few months time in all likelihood, your baby will be eating solids just fine and you'll never even think about it again.