I have lived in the same house for 7 years and planted my blueberries either the year we moved in or the next year. So my blueberry bushes are about 6-7 years old. They have not produced much at all and the berries are very small. I want to move them to a more sunny spot as I think this will help them, and it is more accessible to watering. Is this a good idea and when should I move them? We have had a very dry summer and I'm not sure if I should do it yet or wait for more rain.

Thanks for the help.