I wouldn't be at all concerned about that. I'm in a similar postion, having switched from a 22kW boiler to an 11.2kW R32 Ecodan which has turned out to be around 100% oversized! At the current mild temps the auto mode manages it pretty well so it doesn't cycle more often than once an hour. My COP so far this year is 4.1, better than data table specs on any given day, and that's for a microbore/radiator system with two pumps and a low loss header.
There's an intersting view here on cycling https://www.shenlingglobal.com/blog/unlocking-efficiency-understanding-your-heat-pumps-three-operation-cycles/
"What Is the Ideal Frequency for Heat Pump Operation?
The frequency at which a heat pump turns on and off depends on your specific home and heat pump setup. The cycle duration should be sufficient to heat or cool your home effectively without putting undue strain on the system. Typically, a cycle length of 10 to 20 minutes, followed by a shutdown, is considered normal. Ideally, your pump should complete two or three cycles per hour at most. Under normal conditions, your heat pump should not run continuously, except during extended periods of freezing weather when it needs to maintain the temperature"