Breastfed baby sleeping 12 hours: what will happen to my supply?

[Artijoke]

My 10 week old has slept for 12 hours the last three nights. This is a dramatic turnaround from about 4 feeds a night. At the moment I'm waking at about 4am with such painfully engorged breasts that I can't sleep until he wakes and feeds.

A few questions:
If his long nights continue then when will my breasts adjust and the engorgement lessen?
Will 12 hours without feeding impact on supply during the day?

TIA

[SpooMoo]

This happened to me too between 3mo-6mo (night wakings every night since then though!).

It settled down. I found I woke up with very full breasts in the morning but not engorged after the first few days, I wore a crop top and thick breast pads to bed, and fed on both sides when baby woke in the morning. No impact on supply, just feed on demand in the day.

[McBaby]

My LO slept through from early on a few uncomfortable nights and it was ok. If its very uncomfortable due to dropping four feeds in 1 go I would consider expressing at 4am till your comfortable but less each day till you no longer need to. I had horrendous over supply and had to do Taft early on when she fed less regularly at night as I was in so much pain at 4am and couldn't sleep till she woke up.

[Artijoke]

Thanks both, that is reassuring about it not effecting supply. I should never have posted as inevitably he woke after two hours tonight!