Not so sure whether it's right to post here.

Hi guys

Some info:
Height - 165cm
Weight - 65kg
BMI - 23.9
Started going to gym regularly(4-5times per week) on february. I aim for a slim fit/ athletic build. I'm trying to lose weight, and build up my body at the same time

Currently doing

45minutes of cardio (jogging/cycling/rowing machine and cross trainer)

and

all resistance machine for upper body(15x5 sets)
it's been a month and 3 weeks, able to build basic shapes for my biceps, triceps, shoulder

i lost only 3kgs so far (68 to 65kg)
I guess it's my eating habit. Sometimes if busy about assignment, my lifestyle changed and i'll sleep at 5 woke up at 2pm

i just eat biscuits and chocolate without any proper meal, and sometimes skipped meal without eating.
So can anyone suggest me a healthy diet so I can follow since im cooking my own meal regularly.