RHT Tariff discontinued

Hello, I’ve initiated my switch to Bulb following Eon’s discontinuation of the restricted heat tariff (RHT).
I have 2 MPANS and wanted to find out if I will be charged 2 standing charges? I’m also interested to find out how my boiler & heating set-up will work, as under the RHT tariff, this would come on for 3 hours at night and 2 hours in the day time and be charged on a low rate. Does this mean that when I switch to economy 7, I’ll only be able to have the boiler & heaters come on at night? How would I set-up my boiler & heating system to do this without any central controls?
Thanks
Vicky