Managing study, work, exercise, hobbies, family and social life is challenging but the biggest hurdle is usually procrastination and poor planning. Building good study habits and learning to manage your time now will benefit not only your university life but also your working life beyond university. You need to know yourself. Everybody needs to plan and prioritise but how detailed that plan is and how you go about sticking to it will depend on what you need. So take an honest look at yourself and your current habits. Being in the moment (also called mindfulness) as you go about any task will also help you stay on track.
There are many Apps available now to help you schedule, be efficient and be mindful - have a scout around and try some out. Getting yourself on track may be as simple as setting a timer.