Kath,
When he comes to be tested, you are seeing a sign that he's settling in to a routine of testing and does not mind and I bet is starting to feel a bit better inside. Be happy with that sign!
As for moving back to your 7am time, that's not a problem as everyone does that all the time. Remember that when it's time change, we all have to do a shuffle of 15min every shot for 2 days until we get to our old shot time. Spring forward, fall back. Twice a year it happens.
I think, depending on Trey's numbers, it should be easy to set a plan to move the shots back each time 15min or a bit more, depending on his numbers, until you get back to your preferred 7am but remember ... if you are going to shoot tonite at 845pm, then no foods after 645pm, right? Keep to that 2hrs before shot with no foods and you will get a pure and true BG number at pre shot time.
I checked your ss and you have not put his numbers for today, but wanted to remind you to update your ss before you head out the door so others can check your ss and leave you replies and info for you to see on your return. What would be great is if you were able to take a few tests when you stop back home through the day, each time putting the number into your ss. That way, by tonite, people will have seen how Trey was doing during the day and can comment on his numbers and his dose tonite.