Good luck for Matthew's xray, hope you get your back sorted soon too. Exciting about the flat, you'll be in soon. Maybe Matthew will settle down then, he probably knows something is going on but doesn't know what.
Jake can move, but not properly crawl. He also managed to pull himself up on his toy bucket, which i was really impressed with, and can stand for ages with his hands on a wall, he amused himself for ages stood against the mirrored wardrobe, vain I think lol.