SPTBLE-1S Scan ADC? Any consultants lurking?

Is there a good way to scan the ADC channels with this chip (I'm used to the STM32F030)?

I need to scan ADC1, ADC2, and the Temperature... when I read them individually, it works, but when I change the muxes between every read, it makes garbage...

Also I could probably use some help with other little bits of this micro (StackExchange style maybe).. any consultants familiar with the SPTBLE-1S lurking here?