Hmm.. You may want to consider raising your temps. Hognose are accustomed to hotter climates and many keep their hotspot at 90-95 degrees (mine are around 90). I’ve noticed with a few of mine that they will refuse a couple of meals when the ambient temperatures in my home drop a bit and that they feed more aggressively when the temps rise. I also had one small hog recently that was giving me a lot of trouble until she finally “turned on” so to speak and is feeding great for the first time.