Speaking as a tutor, no tutor is ever going to be worried or think negatively about any student who is attaining grades over 60%.
Sure, there is room for upwards improvement - getting your marks consistently to the mid 60s area would be a good target - so look for feedback on small or self-contained aspects of assessments eg referencing, essay structure where extra marks can be picked up without too much effort.
It sounds to me that you might be going for quantity of work rather than quality - perhaps be a bit more focused on your background reading, skim read some articles to get a feel, and DEFINITELY have time off and lots of breaks - your brain stops taking stuff in after 45 minutes - so breaks are essential to consolidate learning.