I've been working my 17 week old GSD pup on eye contact while heeling but he's not doing it all the time especially when we are moving. What should I do different?

I see that you have the focused heeling video, but at 17 weeks very few puppies have the level of engagement or coordination to do a lot of heeling.

Did you do the muscle memory heeling work first? At 17 weeks, I would not worry about a focal point yet, I would just teach the pup to walk with his head up for rewards.

I'd also recommend getting the foundation video The Power of Training Dogs with Food and do this work before you spend a lot of time teaching him incorrect heeling. Back up your training to more foundation and focus your work on engagement. Most puppies are not ready to do real focused heeling until they are done teething and you have done leash pressure work (typically not until about 7 months old at the earliest).

Cindy