The Bavarians, chasing a Champions League-Bundesliga-German Cup treble, are brimming with confidence after scoring 20 goals in their last four games in all competitions.
"We are on a good run but we have to be careful not to let up," said German international Neuer ahead of Saturday's home league game with Hannover 96.
"What is clear is that we must not relax. We have to keep working and not assume all this will just continue.
"We saw it earlier in the season when we stumbled towards the end of the year maybe because we were blinded by some good results," added Neuer.
Neuer's side also have a Champions League quarter-final with Olympique Marseille to look forward to, knowing the final of that competition will be held at their home ground in Munich in May.
Schalke 04, in fourth spot one point behind Gladbach, entertain Bayer Leverkusen in Saturday's late game.
