What would you call a solution? Once a muscle belly tears it will never look like before.
If you consider being able to train consistently again the solution, with a determined effort, that can be done. You should not have waited 30 months to resume your training. I know how shit like that can mess with your head, but if you are going to make it back, you are going to need all the mental toughness you can muster. You need to 'force' yourself to return to the bottom rung of the ladder. If that means the 30lb D.Bells so be it. Extra warm-up and ROM work. Run a complete/balanced routine. Keep your working reps above 8. The goal is not size or strength at this point, it's rehabilitation.
It may take up to a year like this to 'regain your footing'. You are probably always going to have some discomfort during direct chest training. You are going to need something to feel good about in the short run. I suggest you focus on your conditioning...it is unlikely the pec. will have an affect on running, sprinting, hiking, elliptical, stairmaster, etc. It's going to be a painful, frustrating, embarrassing journey and you are going to discover why you train! It's not something anyone else can do for you............here's a clip to get you going!