My basals when first started pumping in Aug were all set at 0.44. They are all different now. I used to go really high within an hour of getting up, so these are now set at 1.10, 0.85 and 0.95 for the three hours before getting up. When I walk my dogs in the afternoons I was going low, so these are now set at 0.40 for three hours before walking dogs. In the evenings when I am less active, my levels are vary about 0.69's.
I was advised never to alter ALL my basals, and if I was high or low in a set pattern over a few days then to amend my basals three hours prior and up to the hour of it occuring.
Everybodys needs are going to be different according to what activities you do and yor metabolism and what you eat.
I discovered over the Christmas period run up that if I eat more than my basals will actually need to increase too, as well as my bolus's, but everybody is different. You have to find the right basals for you. If you have increased your basals by 0.2 and you are then having to fight off lows, try changing them by 0.1 or by 0.1 every other hour.......
Also, have you fasted and monitored your levels? Are you changing the basals before your highs/lows?