Switching speed modes while riding? Is it possible

Hi, Ive recently purchased a board, and I'm unsure of how to ride it safely?
It seem I have to come to a complete stop to switch speed modes.
For example, from safe mode to eco or fast, I have to ride it a little bit, come to a stop, and then use the mode 2 button to change modes. I can't seem to do it while I'm moving.
This is a problem because before any hills I want to switch into a faster mode so it can tackle it, but I don't exactly want to get off/stop to be able to do so.
I've tried with the deadmans switch on and off, but the deadman switch cuts of after 5kph anyway (according to an evolve tutorial video)

the remote is an R2 controller, and the board is a bamboo gtx