Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today. I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your wee one’s situation, and wanted to help.
Now if Raffie has had some constipation, then it would have been fine to offer some baby prunes. Though further to that, if we need to be a bit more aggressive, I would suggest giving him a dose of cat hair ball treatment. This is a mild GI lubricant and can facilitate moving hard feces through the GI. Otherwise, we could also add a small dose (0.25-1ml) of a strong GI lubricant like Miralax, Lactulose, or food grade mineral oil to those prunes (we don't want to give it directly, to avoid any risk of aspiration).
Finally, if you try these but those signs do not settle, there is any chance he cannot pass urine, or could have eaten something non-edible (and a blockage risk); then we'd want to have him seen urgently to rule out these more serious issues +/- have his vet give an enema if needed.
Please take care,