The sedating part of Seroquel dosing only lasts until about noon on the day after, probably 16-18 hours after dosing - at least for me. On the second day, without dosing the night before, you should be fine.

I fully understand the frustration and feeling like you've hit a brick wall with your treatment. Be aware that there are alternative options to Seroquel. I no longer take Seroquel due to the sedation and weight gain, and seem to have found a decent alternative in Latuda. Whether or not that could be added to Abilify, I have no clue.

Good luck with your conversation with the doctor, I hope it goes well.