They had the ascendancy by 19 points late in the third term and were still level with the reigning premiers 10 minutes into the last.
“We will play our brand and we’ll keep playing that,” Harmes said.
“We’ll take it week by week and try to get a roll on to the bye and see what happens.
“We have a big match next week against GWS at the [MCG].
“We match up pretty well against them. We played them late in the year [in 2018] and had a great win.”
The Demons kicked 15.12 from 54 inside 50 entries to beat the Giants by 45 points at the MCG in round 23 last season.
If they had the same conversion rate on Friday night they would have beaten West Coast and the Demons need to get it right from here on in if they have any chance of turning their fortunes around.
They had 62 entries against the Eagles, but managed just 9.15.
A week earlier, they fell over the line against the Gold Coast by one point, kicking 8.13.
The next three weeks are going to be tough for Melbourne as they head to the bye with games against the Giants (MCG), Adelaide (in Darwin) and Collingwood (MCG).
Harmes said they aren’t thinking about getting to the bye.
“We’re taking it one at a time and I think if we play like we did today, more often than not the results will go our way,” he said after the loss to the Eagles.
“We’ll clean up a few things, we’ll probably do a bit of goal kicking this week and work on when to use our numbers and when to go forward with the ball.”
They will start to get a few players back off their long injury list too.
Jake Lever was scheduled to play his first game back from a knee injury in the VFL on Saturday, while Mitch Hannan (knee) and Jay Kennedy-Harris (leg) are also close to resuming.
Jordan Lewis (ankle) should be available and Michael Hibberd and Steven May could get on the park before the bye and be ready to step back in after it, in round 14.
The trio of Alex Neal-Bullen, Tim Smith and Christian Salem all failed to finish the game against West Coast, though, due to concussion and must be in doubt against the Giants.