5 weeks for my test

You'll need to identify specific resources that can help you get better at Data Sufficiency and SC.

For SC, find a book that teaches you the grammar that's tested on the GMAT. There are a ton of books out there, so ask people here what they have used and recommend. (I won't suggest something, because obviously I'm biased!)

For DS, do you need help on general DS strategies regardless of the topic? Or are there certain math areas that are giving you trouble? If the former, you need something that concentrates on DS strategies. If the latter, then you need something that concentrates on the actual math / concepts being tested. Either way, you do need to identify and acquire some specific resources that will teach you these things (OG11 is great for practice problems, but the book doesn't focus on teaching you what you need to know to get better).