Funny enough I love sweeping spinner, being myself an off spinner 😀
You have to be on aggressive mode to see the line and length of the delivery and quickly take a leading foot in the line of it and sweep.
Most of the times delivery should be flighted, to make it a half volley, this is just the traditional way.
You need to be in forward playing mode, as much possible.
You gonna miss it is there's any hesitation.
So the best way would be have 2 shots in your mind: sweep or dab to backward square leg area, for an easy single.
First thing is to see what the pitch is doing and from there onwards try to unsettle bowler, by moving, changing guard etc.
I've been finishing my overs within a minute, when things were going tight 😀 the season before.
This is what are looking to avoid! 🙂