Brown spots in yellowing leaves

watering regime think girl is in lock out or in heavy root issue, try to smell next to, any mould fungus smell ? root rot or bound started she is far from beeing hungry she is sick, could be ph, but looks more like watering issue lifting pots and watering when soil is dry is only way. sort your wet/dry/wet/dry regime, add 0.5 ml/l of calmag for her path to be easier , or maybe even transplant to a bigger pot with loads of fresh soil, but have good watering regime too.