I'd only cut the crossing/touching branches(only one of them)and any that are growing too much inward or the obviously dead ones.
About year five is when they start to need a more thorough pruning. Brady

Retire from Auburn University, Dr Arley Powell has posted excellent videos of blueberry pruning and other fruits also. He also has the practical understanding of how what he teaches works. He also has a farm called Petals From The Past in Jemiston, AL. In addition he has an excellent website full of good information. He has been a valuable source for me. Hope this helps.

Thanks for the help. They survived an awful winter
on my deck. Did not want to hurt them.