Over the years I've tried before bed and first thing next morning. I find the morning change much smoother for my BG. I do tend to lie in a bit on Sundays so I just change it as soon as I wake up and not had an issue.
I was always taught to change last thing at night as that's the time when less insulin is needed. So all I do is change the clock at bedtime and make a minor adjustment to the basal to cover any shortfall. I forgot last night so did the adjustment at 1.30AM as had crept up to 8
this was my first clock change -- to be honest i didn't really think about it until I got up to do a test at 4am ( now 3am )
i was a bit concerned as I was 11.5 and it recommended a 2.9u bolus and now with an extra hour till morning i admit i didn't sleep easy the rest of the night.-- was ok though at the new 7:30 with a 7.7
adjusted the clock then too
This was my first clock change admittedly I forgot to do it last night so I did mine first thing when I woke up but I was hypo so will probably change it at night time next time, my basal rates differ quite a bit in the morning so probably best I do it before I go to sleep.
I change the pump time before bed but always make sure I'm not changing from one day to another. I did this once and spent ages trying to set the correct date (this was with the Veo, but I wasn't going to risk it last night with the 640G).
Dare to be different lol........I just change mine by 30mins for 2 weeks and then by another 30mins. This gives my body time to adjust to the new daylight level without too much hassle
I just change mine the following morning. I've always done this as I feel happier and sleep better not having to worry or check if it's had any effect at night.
did mine yesterday evening, forgot about it all day and didn't want to do it in a way that would look like I'd taken odd readings. Made sure it was after my post meal test.