It's all very well telling HIM to enjoy it, where are the sisterly condolences here? She's the one doing all the hard work now, and for the rest of her life!!!Seriously, can identify with you totally, in fact, I stopped at one because I didn't think I would be able to cope with another 3 years of dashed hopes and the nerve wracked waiting for that dreaded 4th/5th week.
Be careful, take it easy and make sure SHE enjoys it. The more relaxed you both are about this, the better it is for everyone.
LTS