so recently my guinea pig hasn’t been eating & he seems like he’s struggling to keep himself up. I tried to feed him i’m some banana & he tried to eat it but he couldn’t. I’ve had him for about a year now & he’s never had anything wrong with him. I wanna say he’s about like 2 years old. I can’t go to the vet bc it’s expensive but If you know what this could be please let me know what i can do to help him .