Looks like multiple deficiencies or perhaps lockout but looks to me is lacking in sulfur or nitrogen/or both
Looks like it lost all of its oldest/ lower leaves.
Look at the new shoot starting at the base, its lowest leaves have the same symptom: brown tips.
Also, the remaining top leaves are puffy and yellow from overwatering.
Too hot? Move it to shade or filtered light instead of extra watering.
Sounds good Ill move it to a more shady area and water less.
Should I put fish fert in it? What dilution or full? Epsom also?