Don't be too worried, if you are sure your baby is healthy.
When my dauther is 1 year old, she is similar to your kid. Now she is 16 months and can walk very well and even run. So be patient to your baby. When he is ready, he will. Don't force him do anything he is not ready. It will cause some pressure on him and you. Just relax and enjoy his climb. Take some pics and video. You can't see it again once he can walk. Enjoy...