Inland Bearded Dragon - Toilet Habits??

[sharyn]

I have an Inland Bearded Dragon about two and a half year old. He has an inside enclosure and an outside enclosure. I only put him in the outside enclosure when I'm home during the day which is only usually on the weekends. For about the last 3 months he only goes to the toilet when he's outside and in a certain area. So it could be up to five days before he does his business. Is this normal? I'm a bit worried with winter coming on as it will get too cold to have him outside.