how should my diet be for this type of training

[pete89]

ive been lifting for 2 years now. most of the time clean bulking but either way always eating clean. in a normal day i eat about 2600, 3000 calories just to be full. this is from clean foods. and it doesnt put any more weight on me. i bulked from when i was about 150 pounds all the way to 170 with around 3000 to 35000 calories. so 3000 is normal to keep my weight. well im starting a fullbody split now whihc ive nnever done. i usualy do body part splits. im doing fullbody 3x a week with cardio twice a week. im not trying to cut or bulk. i want to lean up a tad bit tho. im doing hiit. what kinda diet should i eat to still make some long term muscle gains but to drop a bit of bf and maintain bodyfat longterm. i usualy do cardio about once or twice a week for medium intensity 20 munts or so. so this workout isnt much change but some. im just wondering how my diet should be adjusted to my goals