My sonw as a late crawler and hated being on his feet until he was just over 11months. When he took an interest in being on his feet, me and OH would sit on the floor, stand him up and let him walk or in most cases dive between each of us. It wasnt long before he took a couple steps then would fall, then gradually more and more as we played. Think it was a great way to teach him as he thought it was a game. He started walking unaided last week so it only took about 8 weeks from not even crawling to walking unaided.