Re: Not sure how to go about weaning.....
Mama, it sounds like you can relax! You are already well on your way to weaning. Your baby is eating plenty of solids and is enjoying them, He's already cutting down on his intake of milk. The one thing he's doing that sounds like a PITA is that he's nursing so much on the weekends- but that's undoubtedly a reflection of his desire to reconnect with you when you're home with him. As he gets older and more independent he'll probably reduce that behavior as well.
In short, I don't think you have to do anything in order to get your kid to self-wean. That's the definition of self-weaning- Mama doesn't push. The kid leads the way.
But if you want to fast-forward the process, you might want to concentrate on eliminating those night feedings, and on encouraging nursing manners during the day. Your LO may want to nurse for hours but as he gets further into toddlerhood you'll be able to distract him with toys, games, or snacks, or just tell him that "it's time to be done."
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"