bro u can diet without anything and still save your muscle mass, as long as u have your training right,your diet right and no to much cardio then u will be fine..i cant give u a meal plan on here as i do charge guys for meal plans so in all fairness i cant just hand one out to,that being said the meal plans i do are custom to each persons stats,not a cookie cutter method.
if u are doing a cut with carbs i would keep your carbs to 3 times a day,and i wouldnt do HIIT to be honest,keep it low intensity,the point of cutting is to maintain mass and drop body fat,now why do u wanna add extra stress to the body thats already stressed by doing HIIT cardio unless your pre and post cardio nutrition is that of your work out. keep the stress less on the body via doing minimal to light cardio than to try and do to much forcing the body into starvation.