Does anyone recognize this blueberry illness?

Hey all, I'm hoping that there's some folks out there who can recognize this blueberry illness. I've done a fair amount of reading on the subject but mostly coming up with a lot of "that could be it".

Thank you thank you thank you!!

Looks like Brown Spot fungal disease.

Also I noticed some insect damage so its always possible something is feeding underneath the leaves.

Blueberries are fungal dominant on their roots, but also need calcium, but in a form with sulphur, so gypsum works well for them.   When the calcium is too low, or if it rains a lot and dilutes the minerals in the soil, they get these fungal spots on the leaves, and the dieback.    Prune off any diseased branches, or dead branches.  Try mulching with pine bark nuggets, a handful of compost made preferably from goat or alpaca manure, and in an emergency spray entire plant with diluted whole milk, coating all leaves top and bottom if you can.  About 1 cup of milk per 5 gallons of water.  The whole milk has enough fat it will adhere to leaves, reapply after rain.  Mix about a 1/2 cup for smaller bushes of gypsum, and a 1/4 cup of soft rock phosphate, along with a tablespoon or so of hardwood ashes.  Lack of minerals is the root of many illnesses, in plants, animals and people.