Depends what "broke" on ya - you could too easily make that broke takes lots longer to heal by trying to draw any weight too soon - personally been there, stupidly done that. I'd suggest not to pull any string until you get a proper doc's advice.
Starting out, or getting back to stickbows after a layoff should be taken with caution. This is especially true as we age. I'd start off pulling surgical tubing as an exercise, beginning long and very light, then gradually shorten up and increase the tension, easing in to heavier pull weights rather than jumping in with both feet. The key word is "gradual" - being macho about pulling bow weights makes no sense. Longer pull times with lighter weights works best.
"Overdraw" is another method of training the muscles, where as you gradually work up in weight to yer normal draw length, pulling longer and holding without releasing can build up strength ... but being careful with that added training weight.
Once warmed up with the tubing, I have a light 39# bow that gets a shooting workout before drifting up to 47#, which is best for me at age 75. I can control that 47@28 extremely well in all conditions of weather, terrain, stance, and shot placement to 20-25 yards, whereas going slightly up to 50# crosses a threshold that's not so good for me.
This is why it's always best to pull string (or tubing) on a very regular basis - keep in physical bow pulling shape.
We're all experiments of one - listen to what yer body tells you so you can stay fit and stay in the game.