Thanks for that TTT.
Mine has been fussy on the breast on and off now for over 2 weeks, I blame on the 4th leap, which we are riding out at the moment, including some very poor night sleeping and a lot of whining during the day. Like you, TTT, I've learnt to offer but not to force, and indeed, he will feed when he is proper hungry. He was on a very clear 3-hour schedule before, but that doesn't work anymore. It can be anything from 2.5 to 4 hours in between feeds now. I've reverted to on-demand feeding.
I've also been tempted to pump and feed by bottle during the day, because breastfeeding has been so frustrating lately and he has also gone down a couple of percentiles... But a friend of mine was in the same situation at 4 months, and started to pump and only bottle feed during the day. She ended up hating it, and the baby wasn't eating that much better anyway. She was still distractible, but with the bottle instead of the breast. My friend ended up stopping breastfeeding at 6 months because she was tired of pumping.., (and cleaning bottles, pump, feed by bottle, too time consuming). I'm just trying to be patient and only feed when baby wants and when he's hungry. Sometimes he nurses for less than 5 minutes, sometimes more. A La Leche League lactation consultant reassures me that this is normal and that, as long as the baby is feeding at night (which he is, 3 times a night, urgh!!) all is fine... I keep telling myself it's just a passing phase.
My milk supply did suffer because of the short and less regular feeds. So I'm pumping once a day, after the morning feed, to maintain supply up... Always being careful not to pump more than 5 mins per breast, or I'll get oversupply and overactive let down again!! I freeze what I pump "for a rainy day".
Sorry for high-jacking the threat. Hopefully it's still useful!