hey! these are great predicted grades, so you're already off to a strong start.
for english language, i would heavily advise for you to practise a lot of past papers and then submit these to your teachers for marked feedback. applying the feedback they give you to your future work may be what gets you those few marks you need.
for maths, i practised all the past papers in my examboard. for any questions i got wrong, i would look up a walkthrough on how to do them as well as videos revolving around the topic itself. i also did a "corbettmaths 5-a-day," which is just 5 new maths questions each day.
best of luck!