How long does vision take to stabilize after LASIK?

I received lasik treatment 1 week ago. My vision was -2.25 astigmatism on both eyes and same vision. Day after surgery they checked my vision and it was 20/15. My doctor told me before surgery he is expecting better then 20/20 because my vision is not severe and overall looking at my eyes. I went for my 1 week evaluation and my vision is at 20/25. My question is will it go back to the orginal 20/15? I have been putting eye drops several times a day. My eyes are not dry though.