If you aren’t familiar with side slipping on final to lose height, whilst maintaining the centreline, I suggest you go out and learn/practice it.
I second that, it's saved an imperfect forced approach for me a couple of times. Yes, a 172 can be safely slipped with flaps extended....
For me, four complete engine failure landings, and two more where I had power available, but elected a power idle from cruise flight forced landing ('could have gone around, but did not).