Please help with my diet

[VictoryRay]

ok, so i was doing real good and now i hit a wall. i thought i understood how to diet but i guess i dont.

35 yr/old
260 lb
@ 18% bf
6' 3"

story: ive been in the gym for a couple years now and have had steady growth in muscle size. i have done a couple test cycles(i know bf a bit high) and have felt good with results and the way i felt. now i want to cut bf down to around 15% before i cycle again. i started my decent from 275 down to 255 as of the week before last. i wasnt doing any cardio and i thought adding some would be good so i did. 15 - 20 min jog after 45min workout. i also added about 150g more of protien when i started cardio. the problem is, i stopped loosing weight when i started doing cardio???????? now im lost as to what to do... heres my diet. take a look and please coment..

meal 1
1 cup oatmeal with blueberries
2pc whole wheat toast
60g protien shake

meal 2
1 can tuna
1 banana with peanutbutter

meal 3
chicken or fish
yams
green beans
60g protien shake

meal 4
1 can tuna
1 banana with pb

pre workout
60g protien shake

post workout
60g protien shake

meal 5
fish or chicken
yams
green beans

Cal= 1600
fat= 16
protien= 250
carb= 65

Bmr = 2389

Tdee= 3719

please help!!!!