Brazilian LHR: if I want to leave a patch/strip, can I still do full Brazilian on first treatment to make the patch softer?

I'm going to do Brazilian laser hair removal. However, due to aesthetic reason I still want to leave a patch, while making the patch which I want to keep in the future softer and less dense. Can I do full Brazilian at first treatment and not doing the patch area in the following treatments? Is that possible? I'm afraid that the hair ( where I want to keep but make it softer) wont growing back or growing back patchy. Or I just leave a patch from the first treatment?