I can't exercise, due to other health conditions.
I have to change and tweak my basal rates too, and like you am very glad I've got a pump.
The thing that puzzles me about the drop in blood sugar is that it happens regardless of the time I get up. It's easy to change my pump settings for the days I get up at the same time, but if I get up enexpectedly early or late, there's no simple answer. If I get up straight after waking, any changes to pump settings, or even turning the pump off for a short time, doesn't stop the sudden drop, but makes me high later on.
Thanks for your replies, I was just curious really to see if anyone else had experienced it.