Keep working up very slowly each week. I've rehabbed minor pec strains in the past with higher reps (but not close to failure) and adding weight slowly over a period of weeks. Here's a rehab protocol that worked well for me.
1) On your main bench day work up slowly back to normal over a period of at least 8 weeks. This is much better than taking almost a year to get back to normal because you completely tore your pec. Don't go to failure and don't grind out reps as this is typically when you re-injure things.
2) Do isometric push-up holds for 20-30 seconds at various positions in the range of motion. Do these at least 3 times a week.
3) Do very very light flyes for ~20 reps mainly to get a decent stretch in the muscle, but again don't push it so hard you re-injure anything.
4) Stretch daily, but again be gentle enough you don't aggrevate things.
5) Be very very very careful with the dips. In fact I wouldn't do them at all during the rehab process.
6) Go back and re-evaluate what led up to the injury including exercise technique and programming (how many heavy weeks in a row, etc...) and see if there are things that need to be modified to avoid future problems.
