Chuck- I saw this posted on a different posting, try 12 oz of 5% vinegar to 3 gallons at first 3 weeks of biweekly, incorporate sulfur to the soil, mulch with pine tree debris for long term.
Also, pee in the bucket before you water. I also put in some kelp extract.
vinegar for immediate ph needs, mulch and sulfur long term.
Any nutrient analysis withthese ratios 10 2 4 will suffice.
Good luck,
Noogy

Recent blueberry transplants are generally not fertilized in the spring, however pH should be adjusted as necessary, and of course the shrub should be kept watered. If you have already applied fertilizer, it might not be an issue. Overcast weather is good for transplants, because the sunlight is reduced, which slows down leaf metabolism, and gives the roots a chance to keep up with demand. If there is a long stretch of hot, sunny, windy weather, that is when transplants are most likely to suffer.