I strongly urge you to take the time to establish a long term pace that will allow you to regularly decompress from work, learning, and stress every single day as well as whole “step-away” moments for weeks at a time to allow you to completely disconnect at regular intervals throughout the year.
Based on your description, you’re young and your youth is powering this ability to keep going. Even if you take perfect care of your health, this energy will decline with age, more health complications will arise merely by being older, life will put more expectations on you, or conversely, a lack of life due to grinding too hard professionally will bring depression and loneliness.
Think carefully about how maintainable your perspective on work and life is for what will be at minimum the next 20 years.
Stay safe and take care of yourself.