I got this JBP in a group deal a couple of years ago. It was in a declined state and when I got it home I realised why.
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The owner had purchased the tree from Ray Nesci and then with no work plonked the root ball into a bigger pot with potting mix(to lengthen the roots for root over rock

). It was drowning. From memory this was around summer so I scrapped the soil away as best I could back to the original root ball and soil of Ray nesci. Then put it into a smaller terracotta pot. You can see that it had lost some branches and I was expecting to lose some more but it slowly recovered.
This spring I did a 1/3 or maybe it was closer to 1/2

soil change with akadama, crushed terracotta mix.
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I haven't grown much JBP so at first I thought the tree was going bonkers with a heap of buds but they ended up being male cones I think which was a little disappointing.
Not sure if I should have rubbed them off to conserve energy?
The tree has continued to grow well but I am not sure if it is ready to be worked on?
It is on it's second growth of the year while other JBP are on their third. The strongest growth has 4 buds and the weakest have one bud. Couple with 4 buds, couple with 3 buds, few with 2 buds and a few with one bud. Some needles seem to droop a bit but they are very long so this tells me the growth is strong. I put my healthiest JBP next to it and I am surprised to see there is no colour difference. Maybe the tree is ready for some work?
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I have not removed any dead branches yet so I can remember what was lost.
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There are a couple of branches that have not revoverd from dead buds but have budded out further back on the branch.
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It's too bad your in such a hurry cause the stories I could tell you, Bushels and baskets of stories, hole crates full of stories. But if you can spare a moment I will tell you one story.