Seeking expert counseling is a sign of strength. A personal relationship with a caring professional is proven clinically effective.
I am glad to hear that you are learning to cope with his illness and helping him to do the same.
He does have bipolar disorder and will have mood changes and some manic moments.
Let me make an analogy to a person with pneumonia, who was under treatment.
They would still have some coughing spasms but this would not be an occasion to call his physician.
The only time I would recommend contacting his physician (or the ER) is if he seemed so out of control that you feared that he would be a danger to himself (engaging in reckless driving or talking about harming himself). Otherwise, you can continue to keep him calm. You seem to do such a good job.
I expect that he will make positive progress as most under treatment for bipolar disorder do.
Keep up the positive attitude and the prayers.