This time last year with DS i just changed his routine over a week or so before it actually ended, by about 20 minutes or something each time so that he was going to bed at 8pm instead of 7pm which when daylight savings ended would be the correct 7pm. Same with getting up of a morning. I would leave him in bed an extra 20 minutes each day, whether hes awake or not until it worked out to be the equivilent when daylight saving ended. Worked a treat. Will do the same this year.