Hmmm...
Your body needs a certain amount of uumpf to get it through the day.. and then you are getting um, 10mg to sleep? I don't understand the pattern the doctor has you on as it does not match a natural body.
A natural body is highest in the morning, cuts to half in the afternoon and falls to near nothing at night.... so being cut off in the afternoon is making a weird cycle.
You would probaly feel more normal to drop an evening dose and keep dropping those. You would probably sleep better too. Most people take the bulk of their dose in the morning and the remainder in late afternoon. If you were taking 25, that would mean 15 or 20 in the morning and 5 or 10 at 2 0r 3pm. Or you can spread it out to 3 times a day in 5mg increments, but most do not take it past 4 or 5pm as it would interfere with sleep.