I am attempting to do the "combo" training right now also.
The mornings are really chilly now and Niko doesn't want to go.
Not to mention that he's afraid of the dark it seems. During the day it isn't a problem but once it starts getting dark...forget it.
I purchased him at 12 wks and he's been like this from day 1.
Anyhow..I digress...I leave the puppy pad down by the door I take him out to do his business. Up until yesterday..he refused to go on the pads. All the sudden out of the bule he walked over to it..sniffed around and went..LOL
I lavished him with praise and a treat! Hopefully soon he will know that it's ok to go on the pads and outside.