Habits are important in improving your vision in the long term.
One can never be expected to change everything overnight but small sustainable changes make all the difference. Try adding/changing one thing at a time and implement that change for a few weeks, once it is habit, then add another. The first two habits you should implement are, first: never use your full correction for near work (see differentials) and second: take breaks during near work (see 20-20-20 rule). Also never underestimate the importance of light to your vision.