6-day Prednisone course of 81 mg during laser Fraxel treatment series, is it a problem?

third Fraxel done 9 days ago. leg condition could benefit from a short Prednisone course or NSAID. The schedule is 6 days: 24, 20, ..., 4 mg for a total of 81mg. fraxel scheduled again in 4 weeks so if I take the course I will get Fraxel 3 weeks after I am done. How long does it take to heal after a treatment? Am I still healing? will the Prednisone course interfere with healing? And how long will Prednisone remain in my body? will it interfere with the upcoming laser recovery? Thanks.