You will find more papers than you can read. Triage them in three passes.
Pass one — five minutes. Title, abstract, section headings, figures, conclusion. Then answer: what did they do, what did they find, and is this the same system I am studying? Most papers stop here.
Pass two — thirty minutes. Read the methods and results properly, ignoring the discussion. Look at every figure caption. Write down the sample size, the comparison they made, and the effect they reported. If you cannot state their comparison in one sentence, read the methods again.
Pass three — an hour or more. Reserved for the handful of papers your project actually rests on. Re-derive their reasoning, check whether their conclusion follows from their data, and note what they did not test. That gap is often where your project lives.
Keep a one-paragraph note per paper as you go — question, method, finding, why it matters to you. A literature review is much easier to write from twenty short notes than from twenty PDFs.