get_realtime_candles() late 3 to 5 seconds

[Mukasa-Joshua1]

Script I run uses local time to get real_time 1 minute candles once every minute. Doing this, I always get the previous candle instead of the current candle. So to get around this, I make the program sleep 3 to 5 seconds and that way I'm able to receive current candle but this compromises my entries. I have late entries because real time candle is never available for pulling up to 3 seconds later. Why is this so? Can it be fixed?
BTW, iqoption server time is 3 seconds behind my local time.