lol, don't worry. he will go outside. I would suggest
- When he potty's indoors and you praise him, say "good Potty" so he Knows what potty means. Also when you know he has to go you could bring him to his potty pad and say "Go Potty" and praise! So now he knows what that means
-When you know he needs to go, take him outside and say "Go Potty". Wait only 5 minutes, if he doesn't go come back inside. If he tries to go to his pad, pick him up, go outside and repeat. He should go, as he would be pressed.
-Next time he needs to go, take him to the same place, say "go potty" and the smell should also remind him what you're asking.
-For pooping, I would suggest using a leash, some how, the sensation of "going for a walk" always makes Ziggy poop.
My boy pees outside but wont poop there unless he is leashed and thinks we're going for a walk, or when we are actually on a walk. Also I think some things come with age, as he grows, he'll understand you better and will know what you're expecting from him
Good luck with the training