Brief Answer:
Healing may need more than three months.

Detailed Answer:
Hello dear, welcome to Ask a doctor service.
I read your query and here is my advice.

The cartilage of the ear takes more time to heal than other parts of the ear because it contains less circulation than other parts.
It may need up to 3 months or more to heal.
Just make sure not to lay or sleep at that side.
Put ice packages on it and taking antinflamatory drugs such advil is advisable.
The swelling and redness and tenderness going away are signs of healing.

Hope I have answered the question.
Let me know if I can assist you further.

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