I think it boils down to routine and being accountable to yourself first and foremost.
I’m currently med free but the follow are a good way of staying stable ...now that said sometimes regardless of great self care Bipolar can reach out and slap the snot out of you.. so being proactive I feel is crucial.
Don’t be afraid to call your treatment team. Trust me they would rather catch you sliding into a bad place than trying to pick you up out of bowels of hell and get you back upright.
Taking meds as prescribed
Seeing T and Pdoc regularly
Have a safety plan
Getting enough quality sleep
Eating well
Exercise
Meditation or mindfulness, whatever you need to quiet your mind
Having hobbies that you enjoy
Tracking your moods
Getting out of the house on a regular basis
Doing a self check each day, mentally reviewing each of the above can help you catch things earlier rather than later.
Most of all find joy in something every day, no matter how small