The second portion of
this post contains the command needed to show the hidden reagl menu, where you'll be able to push the timers a bit.
As was repeatedly said, even on reagl devices, no flash at all is a *terrible* idea, but, hey, your device, your choice
.
FWIW, this is *probably* FW >= 5.5 specific, but I haven't bothered to check, because, again, the defaults rules
.