Molts can make budgies sleepy, irritable, and they can even change the consistency of their droppings.
As long as he isn't puffed up, doesn't have diarrhea, and is eating and drinking normally, I think that you will be fine. I would look up pictures of sick budgies and compare them with Greyjoy to feel more confident.
During a molt, you can give a bit of extra protein (like a bit of hard-boiled egg with the shell crushed into it) and offer room-temperature mist baths - aim for above the budgie's head so that the water falls like rain.
Best of luck!
As long as he isn't puffed up, doesn't have diarrhea, and is eating and drinking normally, I think that you will be fine. I would look up pictures of sick budgies and compare them with Greyjoy to feel more confident.
During a molt, you can give a bit of extra protein (like a bit of hard-boiled egg with the shell crushed into it) and offer room-temperature mist baths - aim for above the budgie's head so that the water falls like rain.
Best of luck!