I've actually been meaning to bring up how to GTG in this context. I see you're recommending lowering the reps as opposed to lowering the weight. However, I've understood GTG to involve about half the usual loading, at least from a very brief explanation Pavel gave in an interview.
The definition of Grease the groove is a small amount of sufficiently intense work sprinkled through out the day, which means complete rest before the next set. So the extremes of the criteria are something like this.
Heaviest weight
Fewest reps
Longest rest
Most sets
The weight doesn't have to be a 1rm , it just benefits most loading schemes to err on the heavy side when the reps are lowered, keeping stimulus high.
Taken a different way - bodyweight modality grease the groove is 50% max reps , performed with perfect technique, with similarly generous rest periods. The point is sufficient loading to induce the training effect, with recovery and adaptation ending there after.
So, given the case of simple and sinister, there are several ways to look at breaking it up.
You could divide the session by 5 and do 20 swings and 2 getups per visit.
You could split getup practice from the swing practice and conduct them separately.
You could even do each increment separately 10 swings at a time in 10 visits to the bell. And then ten more visits for a getup each visit.
In my experience with kettlebell and my strength goals and demanding schedules, I'd be interested in a heavier bell, 5 reps each arm , 3 visits, 1 getup each arm. And the getup side I would wave the weight going all the way down to bodyweight getups just to dig into the slowness some days.
The overall volume will be a rudder on the overall training effect.
In general
smaller more frequent bites at the apple with complete recovery between sets is the epitome of greasing the groove. How you wanna slice it is gonna be a personal decision based on many factors.
My practice was largely composed of heavy 5s or fast 10s , swings , snatches , or press. Capped at 100 reps per day. One lift per day.
Goal was 5x5 at most intense, and 10x10 with the lightest loads. But many days were off. 6 sets here. 8 sets there. Some days as little as a 3x3.
