I've not had a manic episode from drinking coffee but I've noticed its made things worse mood wise, especially coupled with an irregular sleep schedule

When i am on no meds and depressed, coffee doesn't do anything, no energy at all, I might not sleep but I also won't move or do anything. My sister, who is also bipolar, she has worse manic episodes than I do ( I tend to have a lot more depression) and she had to swear off coffee completely years back, because it really had an effect on her.