What MickeyCheeky wrote is what came to my mind before reading other posts. I rely a lot on my husband to spot issues for me.

I have had periods quite like yours where I felt and performed very well, but had only 4 to 5 hours sleep. At that time I felt perfectly good with that amount of sleep, but my psychiatrist did want to monitor me closely during that period. He knew that I was reluctant to give up my "feeling great period", but knew it could escalate suddenly/quickly. He let me ride the wave for a bit, but eventually a small increase in a medication was a good idea. Nothing drastic was needed. For me, in such cases, a simple 50 mg increase in my Seroquel XR can do wonders without dragging me down. The same goes for 50 mg decreases, when needed. Only when my mood notably escalates or de-escalates does he do a bigger change.