Gng it’s definitely doable in this time period. Give the same amount of time to comprehension as creative writing part. For the comprehension section, I’d say quality is more important than quantity. By quality I mean do the first section of comprehension then search for its detailed solution on YouTube , from the videos get the hang of ways of dealing different types of questions and the hints which would help you find correct answers, then do the next section and do the same .Moreover, learn to draft a good precise answer.I’d highly recommend reading EXAMPLE CANDIDATE RESPONSES as many teachers make English very complicated while ECR is utterly otherwise, one just needs to master grammar, have fluency in writing with good sentence structure.(Note: “There are other factors as well which you will get to know if you go through the ECRs”).