DS2 is 17 months and is a very proficient crawler and climber. He has been cruising around the furniture for months, he can stand on his own and bend down and has taken a couple of steps (max 4 I think).
However,this has all been going on for months and months and he never seems to get any closer to walking properly. He really enjoys being "walked" but as soon as he needs to get anywhere under his own steam he will crawl. He has no interest in push along toys etc so they have not helped.
How long does this in between stage go on for? Should I be worried?