Any Suggestions...

Ok so previously I posted a topic about my boyfriend not being able to hold an erection...I took all of your SOOO helpful advice (by the way THANK YOU VERY MUCH) and it turned out to be a mental thing, as he was anxious, and nurveous, Once i reassured him things popped right up and things have been great ever since. Well almost great, now that we can have sex with no problems he wants to do it NON-STOP!!! I realize he's 23 years old and in his sexual prime, but I don't want to have sex 6, yes i repeat 6 times every single day! I work a full time job and am a full time law student so really I'm only home for about 8 hours a day to sleep shower, relax etc....well now in that 8 hours we have to have sex at least 4-6 times a day. I'm really happy he got his erection back, but I would also be really happy if I could sleep more than 3 hours without having to get woken up by him wanting to have sex...again. I can't even snuggle up next to him in bed at night without him getting an erection and wanting to have sex...again! Any suggestions on how to tell him to chill out on the sex without hurting his feelings???