Maryann
I realise it’s “after the horse has bolted” in that your OH has already started to loose his nails?
But I’ve had 6 x Docetaxel and 7 x Cabazitaxel infusions without looseing any nails, as during each treatment i used Norwegian formula hand and foot cream on my nails (daily), which prevented them dropping off. Maybe of interest to you with regards to any further chemo?