yeah i do manage to keep the temp around that arange..(22c-28c).....i will try out which the other plant that is curling it's leaves upward after getting yellowish..i will water more this time...cos my pot is big..and the root grow really deep down....i think i agree with what u said..it's lack of water instead of overwatering.i tried stop watering but it just got worse...so i will do what u said this time..water till drain out...hope it will revive the little baby gal....

pls...anyone else giving some thought??