I made that mistake today with too much delegated SP to upvotebot
2500 steempower is what I should delegate to upvotebot, I was too fast and press enter in steemconnect.
Afterwards I saw that I had delegated 25000 SP to upvotebot.
So be sure to read everything before you press enter even if you are in a hurry.
I have now corrected the mistake I made
It will take 7 days before I get my Steempower back and have full power again:
Delegators can cancel their delegation at any time but they will get back their SP only after a cool-down period of 7 days. The 7 day cool-down period is to avoid double voting with the same SP.