You did NOT receive abuse on that other thread. People were very kind, sympathetic and supportive. Unless it turned after I posted. A lot of us have been there.
The thing is, it's not about how big a baby is. It's about their appetite and also their comfort. Because as you note your baby doesn't demand so much around others and that's because breastfeeding is about more than the food. They suckle for many, many reasons. It's up to you whether you're happy to allow this to happen. Weaning makes no difference in most cases, in fact in a lot of cases it makes things worse. They generally bf the same amount, you just have to slot in an extra demand on top of it.
Some 'big' babies feed quickly and efficiently, some 'small' babies feed seemingly constantly and people who continue to bf end up with a 'big' baby too but often report that it gets easier as they get older. It's about how they transfer milk, how they seek comfort and their individual needs and personality.
I've been there, dd went from a small to average baby to 25lbs at 6 months on breastmilk alone. Her appetite was voracious. The thing is I have a ds now who is following the same pattern, born small and is gaining huge amounts. But it's easy because I now understand that it's easier to change what I am doing than to force a baby into something it's not ready for. So when I'm reasonably sure he's full to bursting and I need some time to have a bath/workout/whatever, I hand him to dh. And it was hard at first because milk was his primary comfort, but I have another dd who needs my attention too. And slowly but surely, dh has found his own ways to calm and comfort ds so that when he truly wants food, then only me and my breasts will do but otherwise dh can calm him and make him giggle like there's no tomorrow. With dd I just bf without question and dh couldn't calm her down for a very long time.
Some babies are frequent feeders and you can get a sling, ask for help, sod the housework, feed lying down etc. You can do lots of things.
But babies will take the breastmilk they need and no we can't tell you that baby rice will stop this need because it won't. At this age it will just pass straight through, maybe causing a few problems if you're really unlucky.
I do sympathise, honestly. I have been there but it's just the way it is. There's some strange fact about the amount of bm you produce. It doesn't change as much as you'd think, it's more that the specific composition does, your body being pretty clever. But sometimes they take that amount of milk in lots and lots of goes over the day. Sometimes a baby takes it in 5 efficient 'meals'.
Have you thought about expressing? A bottle of formula in an evening if you really need a break?