Re: Is block feeding the only way to reduce supply?
Can you pump (or hand express) the over engorged side just a bit first before feeding? My little guy is 2 weeks old and I often spray into a towel for the first 20 seconds or pump off 1 minute of milk in order to help him feed better.
You can also wrap your breasts in hot wash cloths or take a shower before feeding and hand express there.
Stick with it! It usually takes 6 weeks to regulate supply