I was diagnosed as having only 40% kidney function in may 2019. Creatinine had gone up to 1.7. Doctors started me on 80 mg lasix per day the creatinine went up to 2.7 and has now come down to 1.7.bun is 56. Will continuous intake of lasix 80 mg bring down my creatinine to normal? How long can it take to come to normal. The diagnosis is ckd 3. How to know if it is progressive.