I can’t speak for them but having been in similar situations in a long term relationship I’m sure they didn’t mean a few days literally. Especially knowing it’s due to an issue with medication, that takes time to sort itself out. A few days in terms of getting back on track could be anywhere from a week to a month or two depending on safety concerns and severity of symptoms. I could be totally wrong too, that’s just my unsolicited opinion on the matter haha
If I remember correctly, the top layers of the glans keratinize (in a similar way to your hands may form callouses) causing a long term loss in sensitivity. Adult circumcisions are probably more sensitive post op because the glans is left completely exposed when it was once covered and hasn’t had the time to adapt. I’m uncircumcised and the thought of boxers brushing up against my bits while my heads’ exposed sounds fucking awful haha