Nitrogen deficiency in flower...Help!

i'm pretty sure it's an N deficiency by the way some of the leaves are eventually crisping up n falling off...I hear it's not too advisable to be giving too much N during flower...all advice is appreciated...sprouted these girls at the end of Feb...I don't wanna trip at the last hurdle! we're at day 33 of flower btw

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You don’t want to overdo the nitrogen during flower. Not withhold it. Suggest a bloom feeding with a bit of nitrogen added. Don’t know your nutes to help any more than that.