You have a nice list of methods to try to improve your situation. To reach your goal you will have to actually put your list into action, not just for a day or a week or a month, but on a steady ongoing basis for the entire term. Your first semester was rough, but you passed well enough and you learned from all of the ups and downs, and by the end you saw gains. Welcome to adulthood.
In other words, now that you have a plan…JUST DO IT!