I wanted to see how much Midnight was pooping, so I put him in a separate cage for 2 hours with a variety of tasty food and water. I counted 5 poops, and one of them looks more like 3 stuck together. Not sure if it's appropriate to extrapolate, but if I do, I get 60 to 84 in 24 hours. Based on some googling that seems like an okay amount?Have you considered doing any hand feeding? Getting things moving again (here, a motility drug could help if you are not seeing adequate poops) could help.
I took a photo: https://snipboard.io/437XTw.jpg (CW: GUINEA PIG POOPS)
I've looked at various guinea pig poop charts and it's hard to fit them into a category. They are not mushy, especially dry, or especially small. But some of them are in some weird shapes.
I also tried hand feeding yesterday and it was a struggle for all involved. I got in about 3 mL of Critical Care and then gave up. Today I did better and got in 9 mL in one sitting. I'll try again later. Unfortunately the syringe I have is a 3 mL syringe which is too large, but I've ordered some 1 mL syringes which should arrive on 6/22. I'll try to manage with this 3 mL one until then.
I've also have an appointment scheduled with a vet on 6/24.