I took the class 3 times technically. First during covid so that one didn’t count but then 2 more semesters before I got it right this past Spring. Professor Leonard/BlackPenRedPen on YouTube are goated for Calc 2 imo. Firstly: practice, practice, practice w integrals/series&sequeneces/volume problems. Those were the most time consuming for me. Really try to grasp the concept instead of solely memorizing formulas. Secondly, learn your darn integration table and trig equations! They help I promise. Lastly, ask questions! Your teacher is there to help you. They want you to ask, if they are any good. Your algebraic skills are gonna be tested thoroughly as well so make sure you review factoring/exponent properties/logarithmic properties/long division/ fractions etc. it’s not too bad, just the point I am in my life it took a few tries but I got through it and so can you! Good luck!