Was the re-settling after 4 hours in the day or night??

If it was at night, I would've done the same thing, and if he went back to sleep, the he obviously didn't need the feed.

We tried to 'demand feed' DS1 on formula and we ended up giving him a tummy ache.
At 8 weeks old, I'd be doing 4-hourly feeds during the day, a dreamfeed, and then hoping he sleeps through the rest of the night.
Some kids can do it, some can't - DS2 did so I was lucky!