Some people may not agree with me, but I am a huge proponent of doing research as early as possible.
With that said, don't load your plate too early until you have a couple tests under your belt and know you are succeeding at whatever level you predetermine for yourself. Once you feel comfortable, I'd dive in. I published 2 papers during M1 and am submitting/publishing a few more by winter break M2 and it by no means impacted my grades, but I did wait until after a couple major tests to know I was academically solid. However, research will eat into your personal time and a new hobby may be lit searching on pub med. I think it's worth it and adds a lot to your career. Even if you think you don't want an academic career, it shows interest in a specialty, ability to take on big projects, mastery of a subject, and is great for networking/LORs/etc.
My 3 major points of advice would be:
1. Seek out research at neighboring MD institutions. There is no point spinning your wheels on small projects that aren't going to get published or even may not get published. Find someone that churns out papers and make the best use of your time.
2. Do clinical research. It's much easier to publish clinical vs basic science and you can do it in the comfort of your own home instead of a lab. I've done and published both and likely won't go back to basic science unless it's a niche field I will 100% be staying in as a career.
3. Wok as early as you can to lock something in summer M1/M2. A lot of spots go fast and early. Reach out to everyone you can, truly sell yourself, and be excited.