I have no advice for you I know how my rat neo(rip) was skin and bones because he was starved by my step uncle when my grandmother was dying in 2003 and my step uncle robbed our house and neo wouldn't get better he wasn't starving himself but his health wasn't getting better we were going to put him to sleep but then he died on mother's day before i got to say goodbye i was in tears all day..but anyways hugs and prayers to you for you to find out what is up.