my guinea pig is currently on treatment for mites (ivermectin) and i've been giving it to him orally for the past 2 weeks. however, recently he has started 'improving' i think, his scabs are healing, fur is growing back, and he hasn't been itching so much. but he has been mostly just laying down in his cage doing nothing. he's eating and drinking fine, and seems okay, but is just very quiet. i'm not sure if this is because he's just bored (he has no toys, a small cage, and no friends while he's being treated) or if it's because of something more serious. please help!