I think you got some excellent advice from the posts. The only thing I would add is there may become a time when you need to apply some pressure and assert your intentions. It seems Tank has investigated the “object” and is ok with it, maybe some pressure to let him know your desire is for him to proceed. Once results are obtained, let him rest a few seconds and think about what just happened, praise him and repeat until no pressure is required.
You’ll get it. Good luck.