I more often forget to take my evening meds at my regular time than my morning meds at my regular time, but rarely completely forget them. What happens is that if I forget my evening meds at the regular time I will eventually figure out that I forgot by around 11 pm. How? Because I won't be even the least bit tired, unlike usual. In these cases, I then take my evening meds very late and can't fall asleep until the wee hours of the morning. That often screws up my next morning. If I didn't take my evening meds at all I would hardly sleep and likely become unwell.

As said, I rarely forget my morning meds either, but have. Since there is no immediate clue, like insomnia, they can be completely forgotten. I will say that when that happens, I usually do have some mood issues because of that. I use pill boxes, so can see if I missed a dose.

For how long have you been on at least most of your current bipolar meds?