This makes so much sense that you are feeling a little worried about it because it can feel like such a big change! But my biggest advice as a sleep consultant and mom would be try not to stress too much about it! When you wake up on Sunday morning, start your day with coffee before you go around and change the clocks in the house. Then you can approach the change in a few different ways: gradually adjust, use the new time as a way to have an earlier bedtime, or do nothing and let it naturally play out. As far as nap timing, if your 7.5 month old is still using wake windows for nap time, you could just focus on those, but if your baby is on a set nap schedule (i.e. 9 and 2), you can adjust by 30 minutes each day so that after a few days you are back at the normal time. Hope that helps! You've got this!