ADS1220: Internal Temperature Sensor register set time

Hi, I am using the ADS1220 to get some readings, with a differential input coming in on AN1 and AN2 and another input on AN0. I am also reading the internal temperature sensor of the ADS1220. My issue arises in that after setting TS = 1, my analogue read function is getting a value that is from the previous state, as if the TS bit = 0. This only happens rarely so it is harder to diagnose exactly what the issue is. A solution that I have tried to fix this with is to read the control register 1 to make sure that the bit has changed, and waiting until it has if it hasn't (while spi_adc.xfer2([0x24, 0x00])[1]  != whatitshouldbe:). My question is, why doesn't this solution work (I'm still getting the old value even though TS is supposedly = 1) and if there is a better way that I should be doing this.