You aren't exactly weaning if he only grabs a couple of berries from someone else's plate.
Have you ever tried to give him something. I am French, and this battle of approach between BLW or spoon is very strange to me. We give to babies food with cutlery for the food we would use cutlery for as adult, and use fingers for those we would use fingers for. IT doesn't have to be one or the other and you have an opportunity window to offer new food, new flavours, soups, risottos, which you can't really use fingers for.
BLW might be better accepted for older babies
"" “There are also concerns as to whether all babies are developmentally ready for grabbing chunks of food at six months. Professor Charlotte Wright, a pediatrician from Glasgow, found that, of a sample of six hundred families, only 40 percent of babies were in fact ready to self-feed at six months. By eight months, 90 percent were ready to reach out spontaneously for food. This indicated to Wright that it was “unrealistic” to expect children to rely exclusively on self-feeding when they started on their first tastes of solids. Another problem with BLW is that, as we saw in Chapter 1, when a “child waits until six months to start solids, they miss out on much of the crucial flavor window between four and seven months, when they would have been more receptive to acquiring new tastes.”
“BLW cannot be the one true way to feed a child, because nothing ever is. ”
Excerpt From: Bee Wilson. “First Bite: How We Learn to Eat.” Apple Books.
It is great that you eat all together, and maybe give baby something to eat as well.