slow fermentation

I am making a oktoberfest that seems to be fermenting very very slow. OG was 1.062 one week later it was 1.045. And now (3 days after the last reading) it is 1.041. I am fermenting @ 50 deg. but after the 1.045 reading I raised the temp to 55 deg. I know this is a lager but the last lager I did ( my first) fermented out in a week. This is a different yeast (wlp820). I used a big starter and fermentation took off right. I dont want to rush things, but is this normal?

Looks perfectly normal for 820:

"WLP820 Oktoberfest/Märzen Lager Yeast
This yeast produces a very malty, bock like style. It does not finish as dry as WLP830. This yeast is much slower in the first generation than WLP830, so we encourage a larger starter to be used the first generation or schedule a longer lagering time. Attenuation: 65-73% Flocculation: Medium Optimum Fermentation Temperature: 52-58°F Alcohol Tolerance: Medium-High"

https://www.homebrewtalk.com/wiki/index.php/White_Labs#WLP820_Oktoberfest.2FM.C3.A4rzen_Lager_Yeast