Blooming is determined by hours of darkness. If the plant is under a porch light or somewhere that is not dark all night, that can inhibit blooming.

Maybe they need longer time to recuperate from dividing and repotting? Darker and longer nights have influence on blooming; and I believe cooler temps do too. My CCs (much smaller than yours) have blomed 3yrs in the row (I have them only for 3yrs), but this year much later: they are blooming now...that could be warmer temps???

- photos taken Jan. 6, 2022. The buds started opening just around Jan. 1st, later by about 10 days-2 weeks than previous 2 years

The cactus are typically out on a covered back porch with no lighting at night. They are brought in when a forecast of below 30; otherwise I cover them with a sheet in case there’s danger of frost,

Do you fertilize?

Yes, during the summer.