Yesterday Isaac was able to move forwards on a tricycle ride-on. Normally he goes backwards but I think he's figured out his balance to propel forwards.
After our visit with the grandparents, it seems Isaac's communication skills have improved. He can do the all done and more signs correctly. He has also started trying to verbalize more. The down side is that he also screams/squeals a lot more too. I'm hoping the pitched squealing is just a phase that will pass.