Methods English and bio
The tried and tested method for Methods is: Read Textbook -> Complete Textbook Questions -> Practice exams
So first learn the theory by reading + watching videos if you don't fully understand a concept. Then try to do the questions. Repeat this until you have finished the course. Then go to practice exams, even if you have completed the textbook most people won't do well on their first practice exams since it is a different style of questions but over time you will get better if you take note of the mistakes you make. I would like to add that the theory learning is a really important aspect as it can be tempting to jump in answer questions through trial and error or just learning via examples. However, once you get to the harder questions it is the mathematical theory that you will have to rely on since that doesn't change but the type/way the questions are asked does change.
As said above English is it bitter harder to get ahead so if you do feel like you have nothing to do you should be writing essays, getting them marked by a teacher or tutor. Then take that feedback and using it to write your new essays.
Biology is also a little tough since the textbook has way too much information to learn so unlike methods you can't solely rely on that. So you could opt for buying condensed notes and then supplementing areas of knowledge with the textbook whilst comparing what you are learning to the study design to make sure you are learning the correct areas.