I don't know where your fruits are coming from but I have noticed the fruit here
is not as sweet or juicy this year. Just this morning I was telling my husband my favorite peach, Oh Henry, is out and I bought a bunch from the Farmer's Market. First time they have been rather hard, dry and not very sweet.
I read, and was told that fruit needs a lot of water to ripen and become sweet. We are in severe drought conditions here and the grower's are on water allotment and that has some effect on the fruits. On the other hand, my neighbor has a peach tree and I am certain she is watering it well. Her fruit is super juicy and sweet. Is the area where your fruits are sourced in a drought, as well?
I have a young, small blueberry bush in a pot on my patio and the berries I got off it this year were large, sweet and juicy.