intermittent fasting good for fat loss? can i change my timing of eating window

i am doing intermittent fasting for 15 days now. my eating window is 3 pm to 11 pm. it is getting very hard for me as my college time has shifted from 1 pm to 11 am. i get up early so i feel very hungry as i eat nothing till 3 pm. how can i change my eating window when i already started intermittent fasting. thanks in advance.
edit - i want to shift my eating window from 3pm to 11pm to 1 pm to 9 pm

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