You're doing great! Good job keeping it going! Have you changed your habits recently? Have you been drinking more booze lately? Have you been sleeping enough? Any other diet changes?

I know you know this but we're just misfiring nerve endings strapped to a meat puppet so if your meds aren't working, physical needs being met are as important as emotional ones. Are you remembering to take food care of yourself? Are you following the good habits you've learned over time? Are there any other extra stressors upsetting your balance?

If your meds aren't working after 4 years that's pretty scary (i remember, i cant, i won't go back there) but depending on how long youve been suffering this dip it can just be temporary. Breathe, brother, you've been here before and you made it out last time too