I sort of have a similar problem. The foods that used to bring my temps up to 98.6 or higher only come up to 98.0 – 98.1. What’s up with that? I had 2 sourdough waffles for breakfast with butter & honey and crammed down a banana cooked on the stove in butter & sugar. 98.0! Sorry to take away from your question, AdelaidexLyn.
I wanted to suggest pancakes, toast & stuff like that but saw your wheat allergy. How about potatoes with butter & salt? Not that you want to eat just that all day long everyday. I am sure others will come on with suggestions.