Sads around lunch?

Hey team, ive been lurking for a bit and I have a question for yall fellow 'thymies,'

So I was diagnosed with dysthymia and adhd earlier this year, and take vyvanse for the adhd, and recently was taken off of wellbutrin. Normally around lunch time, I'll kind of lose all motivation and my high-energy-ness, and feel almost like im on the verge of crying for the rest of the day (i rarely get to the point of actually crying, but it feels like anything could set it off). Does anyone else experience this?

Edit: It may have something to do with poor sleep hygeine, will try my damnedest (not tonight bc its already too late, but for the rest of the week, 9:30 is the bedtime, and 9 is no screens (this is now my accountability)

Edit 2: I went to bed last night about 9:30ish, woke up at 6, still feeling tired. It may be some sleep debt im paying off, but not really an improvement to mood just yet. If anything its gotten a bit worse? Food has been consumed, and sleep has been had. Will update tomorrow for progress check.

Edit 3: Its not when I said I'd update (my excuse is adhd) but after attempting a regulated bedtime for this past week, and 3 square meals a day. My conclusion is that I shouldn't have been taken off my wellbutrin lmao, my psych put me back on it and no more lunchtime sads. Just take your meds team