Current M4 here! Looking back, I didn't realize just how much time you actually have during M1 year--even though the transition into med school can be incredibly overwhelming and you feel like you need to study 24/7, that is most definitely not the case! One of the best pieces of advice I got when I was an M1 is that med school is all about managing how far behind you are--you will never be able to understand/master every fact thrown at you so with that knowledge, definitely make time for extracurriculars/non-academic related activities! Med school is a marathon, not a sprint, and if you try to spend all your days studying and reading everything you possibly can, you WILL burn out and you will be miserable. Make time for friends and definitely develop a good network of support because medical school can feel like a very lonely journey at times (unless someone has gone through the process or is in the midst of it, it is very difficult to find people who can completely empathize with you and understand that you are 'busy').
Also, learn to recognize what the early signs of burnout look like for YOU. When you start experiencing these feelings, it is 100% ok to step back and just take a complete break from studying. Trying to fight through burn out will only prolong the suffering and inevitable so if you need a mental break, TAKE IT. One or two days of no studying is not going to kill you in the long run but getting burnout that wipes you out for weeks will be tortuous. It's also 100% ok to seek help from friends, family, and professionals if you start feeling overwhelmed. Just keep in mind your reasons for going into medicine and realize that many many people have gone through the exact same process as you, so YOU CAN DO IT! 🙂
Best of luck! <3