Sounds like a good plan; I'd cut the nap time. You could pick a time during the day for like 'downtime' with rich music to suplant nap time. That may pay off dividends as a good long range thing. Personally, I ignore things like recommended sleep as I have never slept much. DS7.5 stopped napping well before 2 years and needs around 9 to 9.5 hours now.