Many years ago I had a similar problem with my Albino Royal ( Ball ) python who used to eat everytime without fail - without going into too many details she stopped feeding for about 3 months !
She was perfectly fine and healthy and wasn't losing weight . I panicked at first but when I checked online and discovered that it's just something that all snakes can go through for whatever reasons and Royals / Balls seem to do it more than others apparently . I also learnt that the record for going without food was held by Royal / Ball python and it went for 21 months without eating !!! It then restarted and was fine afterwards ..
Anyways , If it looks healthy enough and isn't sneezing / wheezing and isn't losing weight - I wouldn't worry at all .