technically you could switch your equipment off now with no issue. l know plenty of ppl who think the small amount of electric thats used on routers/modems is too much so they turn things off daily and wonder why their net is so slow.
however if your transferring then usually it gets turned off the day its turned on with the new ISP (thats if that is the case here), either way your paid up to the date of cancellation, ld just make the most of the connection until the cancellation date.