not eating when should i be worry

So my bumblebee females has refuse all attempt at breeding for more than a month now. It started when she hit 1000g, at the beginning of her hunger strike she was 1029g and now she is 990g, not a huge weight lost but seems too much for only 1 month. I don't over do feeding attempts, I try once every week and give her about 10 mins with a live feeder and she always seems very interested in the rat, even goes into the striking pose but panics and hide if the rat go ups to her to sniff. I try feeding frozen thaw and freshly kill both does not work (she has been feed live ever since i had her). I don't try again till the next week but throughout the week she is always out looking really hungry. I have also try asf which she has no interest in... I know refusing food is common for ball pythons but when should I be concern? It really hot here too and I thought hunger strikes usually happens at winter?