2hats
Dust.
There are as many different immune response profiles as there are humans on the planet...Stuff I've seen says booster generates a good immune response much quicker than the previous 2 doses, days rather than 2-3 weeks, but don't have the study to hand, think also 2hats posted something along those lines on here maybe?
Expect up to at least 2 weeks for circulating antibodies to really ramp up (ISTR it takes around 3-4 days in the healthy for B cells to fire up) and then up to 6 months to really benefit from the somatic hypermutation that is broadening your cellular response to variants both current and future as yet unseen); though there is evidence that that continues for up to 12 months. Assuming you are immunocompetent, of course.