How to teach ?

My now 14 m old started walking (without any support) from when he was 13 m old . But in a few days he has picked up & he walks so fast that he doesn’t see what’s in front of him , keeping falling down & getting hurt . Every day story.

How do I teach him to walk slowly ?

Or would this speed & clumsiness correct by itself as he gains more confidence ?

Also he still continues to crawl at times in between walking . When will he stop it completely ?asking this question as my family members keep asking why he still crawls when he can walk & I have no clue . Is everything ok ?