Assuming you can find the motivation to practice when the world is falling apart, I'd ramp up practice time slowly to avoid injury. Every year at jazz camp I meet so many "hobby" musicians who after 2 or 3 days are in trouble. Bleeding fingers on bass players, blown embouchures on brass players, tendentious flaring up in pianists and drummers. There are tears.
So, I suggest ramping up practice about 10% a week. Warming up the muscles before you thrash the hell out of your instrument is helpful too. I'm working out in my home gym this morning and then heading to the practice studio.
For helpful advice I suggest all eager musicians read "The Musicians Way". I read it like many people read holy books.
David Story: Professional pianist, drummer, composer, and educator. Well into his 4th enthusiastic musical decade, David works with adults pursuing musical dreams in the autumn of life, while he maintains an active presence in the Toronto arts scene.