Hi my greek tortoise who is almost a year old (will be one year old in December) has not been pooping lately. He continues to eat regularly and bathe regularly (30 minutes every other day in luke warm water) he tries very hard to get his stool out but always fails. He used to be very active and such but lately he has almost seemed weak. Should I take him to the vet? Please help. I'm very concerned for him. Thank you!