I think it impossible to give a definate answer here, because, as others have said, everyone is different. Also finding a therpist that you 'click' with is also tricky, and that alone could take a lot of trial and error.

The concern that i would like to raise, is that if you try to 'heal' within a 2-3 month period, you will be putting a hell of a lot of pressure on yourself. This in itself could lead to set-backs. Having said that, this few months away from work could be a great time to make some real progress. Without the pressures of work, you have some real time to focus solely on your healing. But equally the time will fly by.

I wish you all the luck in the world, just try not to put too much presure on yourself, or this may have a negative effect.