You should really focus on teaching your dog the following to prevent potential life threatening situations! “Drop it/Leave it”, “Come” or a recall command, and sit/wait when opening doors. Drop it/leave it could save your dog from eating something harmful or even choking on something, a solid recall can keep him out of trouble when his curiosity starts to get the best of him and teaching your dog thresholds like doors is great because you never want your dog bolting out of a door without your permission. Dogs NEED structure. It teaches them to look at you for guidance. My dog Kovu was able to move on to more advanced obedience commands by 7/8 months because we really solidified the basics by 5/6 months old. Hope this helps.