Reus, who has impressed with seven goals in 19 Bundesliga appearances, has warned that he is now "on the same wavelength" as his teammates.
"I think I needed half a year to get to know how everyone else really ticks, their movement patterns, what's going through their minds and what they're going to do next," Reus told Bundesliga.com.
"I think things started to settle into place during the first half of the season and that will hopefully show from here on in. We'll be able to keep building on the understanding we now have.
"Obviously we're practising every day in training and I think we're on the same wavelength now."
Dortmund face a tricky trip to second-placed Bayer Leverkusen on Sunday.