Welcome to Healthcaremagic.
From your query i understood that you had Type 3 shoulder injury
Usually separated shoulder
type 3 resolve in 6 weeks.
Some times it may take upto 12 weeks.
It depends upon the previous shoulder disease, level of injury and stickiness to doctors advice.
These are all rough values.
Everyone heals at different rate.
Sometimes this type of injury leaves permanently leave small bump in shoulder.
You must start with gentle stretching exercises that become more intense as you get better.
But with your Orthopedician and Physiotherapist follow up.
If you start using your shoulder before it's healed, you could cause permanent damage.
So better wait and watch.
Do not resume to your normal physical activity until you feel your injured shoulder is as better as uninjured shoulder.
Hope this helps.