Feeding
Thirty minutes upright, eight times a day, and almost nobody tells you what you are supposed to do with that time. Number seven is the only one that gives it back.
Almost every parent I see in those first weeks has the same problem, and it is not the reflux. It is the half hour afterwards.
You are told to keep her upright. Nobody tells you what to do with the arm, the cold food, or the rest of the day. So parents work through the list below, usually in this order.
"Hold upright for 30+ min before even attempting to put him down."
The default, and it works. It is why you keep doing it. Held against your shoulder at an angle, most babies settle and stay settled.

The oldest trick there is and the reason it persists is that it does something. A slight lift is better than flat.

Widely suggested, and for some babies it genuinely reduces how much comes back up.

Dairy first, then soy, then whatever the next suggestion is. For a small number of babies with a genuine intolerance this is the answer and it is worth ruling out.

The advice everybody gives, and when it works it works beautifully. She is upright, she is close, and your hands are free.

The honest one, and the one I say most often. Reflux almost always settles on its own as the muscle at the top of the stomach matures. Most babies are through it by four to six months.

This is the one most parents have not considered, and it is the only approach here that changes the half hour rather than working around it.
The reason holding her works has nothing to do with your technique and nothing to do with how good you are at this. It works because of the angle she happens to be at while you are doing it. Which means the moment you lay her flat, in one movement, the thing that was helping disappears.
You have been fixing a positioning problem with your own body. It works, and it costs you the entire day.

The product I point parents to is CradlePod, a contoured pod with a fixed 15 degree slope. Not propped, not a towel that has slid flat by the second week. It stays exactly where it is put, feed after feed, whether or not you are having a good day.
It eases the trapped gas and discomfort that come with lying completely flat, and because she stays centred rather than drifting to one side, the pressure spreads across the back of her head instead of landing in the same place every time.
"We barely manage proper tummy time maybe once a day, otherwise we spend so much time keeping him upright."
That is the real cost, and it is the one nobody counts. She is failing at one instruction because she is obeying another.

Exactly what we needed in the early months. Keeps our baby comfortable and centred without me hovering.
Currently 50% off, with a muslin cloth and The Calm Baby Guide included. If it does not make things calmer within 30 days, send it back and you get your money back.
See how it works