I am going to appear for CAT17 and this will be my second attempt and it has been 4 months that my preparation has slowed down

You have to optimize your preparation on weekends for 9hours and daily 1hour while traveling, if possible you can ask for some leave from your organization. In the end your preparation will matter with added accuracy to score well. The more you revise the better is your accuracy. You wont get accuracy by leaving questions, try to solve all problems initially and where you go wrong solve such questions more to make your weaknesses redundant, once you do that your confidence will boost miles away. Secondly, give maximum mock tests and make sure you dont repeat same mistakes again. once you're done with that you can then choose and select certain questions in final CAT exam to score great percentile wiyhin less amount of time for maximum accuracy. All the best for future endeavors.

There is no remedy to make up for the lost time. You'll need to find time if less on weekdays then, find more on weekends, if possible study while travelling. Use online learning platforms for that. Also, take tests to easily find your areas of strength and weakness and then you can specifically focus on them for improvement in less time.