For those into data, a recently released UK study is showing reduced efficacy with booster.......
There is evidence of waning of protection against symptomatic disease with increasing time after dose 2, and by 10 weeks after the booster dose, with a 15 to 25% reduction in vaccine effectiveness after 10 weeks,"
Booster efficacy against symptomatic Omicron reduces within 10 weeks, World News | wionews.com