Your plant looks healthy and you have done a great job with it. It has lots of new growth. I’ve never grown blueberries in pots but have a dozen or so in my yard. There are numerous blueberries farms in my vicinity, our soil is naturally acid, and it rains a lot in the winter. I use bark as a mulch. It looks like you have a variety of high bush blueberry. You should have blooms this spring and with luck berries later. Beautiful bush. Deer love blueberries and often “prune” the bushes. No worries.