Yeah I dont use the 4's at all really. Im using 8's almost exclusively for meals and corrections.
The main use for me seems to be fast corrections and to minimize the post meal spike. I still use novolog for rest of the meal as Afrezza just doesn't work as a total replacement for me.
My main two issues which causes my high A1C which it addresses very well:
1. Post meal spikes
2. Lows after corrections which cause me to overeat and rebound.
UHC has already approved my script with no effort on my part. I was quite surprised.
My A1C dropped from 8.2 to 6.2 just from my Dexcom use alone. I haven't used Afrezza long enough to see how much it will help in lowering my A1C even further. Quality of life is the main thing I'm judging it's affectiveness on. I hate the way I feel when my BS is high so it's wonderful for that.