Is there enough time left to improve my grades?

I'm quite worried since I would like to achieve a minimum of 7 grade 7s at GCSEs but my mock results are saying otherwise. Would it be possible to improve the following results in a months time in time for the exams? Thanks.

Chemistry: 7 (1 mark off a grade 8)
Drama: 7
Computer Science: 7
Maths: 6 (4 marks from a grade 7)
Biology: 6 (3 marks from a grade 7)
History: 6
English Language: 6
Physics: 5
English Literature: 3
Spanish: 2

I would say that the subjects were you achieved at 6 and 7 you would have a good chance of getting grade 7 for your GCSEs with a little extra work and revision. However, looking at Spanish and English Literature - would you say that you are struggling with the content or did you just have a bad mock exam? Have you tried to ask your teachers for more help, or looked at the mark scheme to see where you went wrong? Practice papers will also help you in terms of exam approach, so try to get as much as you can, compare to the mark scheme and look at the areas that still need further revision.

I think for English Literature it was a bad mock exam. Usually I get grade 5s in it. Not the best grades because English Literature isn't really my strongest subject.

Spanish, however, I've given up on. I think it would be more useful trying to boost my grades in the subjects I need than to waste time on Spanish. It has little impact on my future and I don't really need it for any A-Levels. The only confliction I think I would see is if a university required me to have a langauge GCSE. In that case, I would probably have to seek a language GCSE equivalent qualification.