Controling and Automating Powerwall Charge and Discharge

Hi, we are looking to be able to add a bit more finite control of our Tesla Powerwall choosing when it charges from the grid due to being on a variable tarrif. What I’m after is to be able to either “force” the battery to start charging or set it for a specific time when our tarrif looks good. While this is do-able from the Powerwall app it’s a bit of a pain with our tarrif and when most other things of ours are on HA already.

This doesn’t seem to be workable from the official Tesla integration but are there any others out there that will do this job? Thanks in advance