It wouldn't hurt to go back to step one and start over with him. The raw weekends, while great, don't really do much to get him acclimated to raw. The mutton, liver and sweatbread combination is likely what resulted in the loose poops, not the lack of bone. Of course, every dog is different. I know some dogs that need bone every day. Personally, my guys get bone every 2-3 days without issue. It will be completely up to your dog on how he handles it.
If it is a case where he needs bone every day, then you may benefit from feeding only one meal a day. That way you can give all the bone they need at the same meal as the other stuff.
I know, as humans we cringe at the idea of only eating once per day. But dog's physiology is much different than our own! They were designed to eat large amounts and then wait, in the wild going days without eating and then gorging as much as they can possibly consume. Of course, only the hardest of hard-core raw feeders do that now (called the gorge-fast method), though it is a possibility if you were interested. But feeding once per day can mimic that cycle quite well.
A dog doesn't actually feel full until their stomach is stretched with a large meal, so small meals throughout the day (or even two smaller meals) isn't enough to fill them up, so they are always in a state of "a little bit hungry", hence a big component to the fact that many dogs are chow-hounds. Most raw feeders I know feed once per day, and have reported great results. Less begging for food, more satiated, etc. I feed twice per day, but only out of necessity. Gio needs to take his medication with food, and he gets it twice per day, so two meals it is. If he ever gets off of this particular medication, we are going to a once-a-day feeding. I did it for a couple of weeks before the meds, and they LOVED it! And, it was helpful because I was able to feed larger more complicated food items (which the dogs love) because I didn't need to chop things down to smaller serving sizes.