Well, I guess I should announce that little Gabriel has slept for more than 7 1/2 hours for the past six nights! It has been quite an unexpected blessing! I had no idea when to expect him to start sleeping longer at night; all of my friends have had very different experiences.
Last Monday night, we put Gabriel to sleep at 8:15pm and didn't wake me up until 3:30am. I woke up, looked at the clock, and flew out of bed. After determining that Gabriel was still alive, I've never been so cheerful before in my life at 3:30 in the morning! Since last Monday, Gabriel has continued to sleep for 7 1/2 to 8 1/2 hour stretches every night.
I still can't believe it. I hope it lasts!