Drop your sugar and high glycemic carbs.
Keep the protein intake to 1.5 to 2 grams per pound.
Keep eating the small meals every three hours. Eat small snacks to satisfy hunger but don't bliat your belly.
No sugar, and low sodium. Both add to bloating and sugar adds water and sugar to fat cells, it hydrates them and makes them larger.
Keep your training loads the same as when you were lifting for mass, and adjust the poundage slightly as your strentgh decreases.
You'll lose some strength at first, but the fat will begin to strip away and you'll end up replcing the fat emass with muscle mass.
Don't look at the scale, look at you muscle separation. And the separation in your serratus and abdominals.
No sugar is the key here.
Drink ****loads of water though. And see if you can increase some fiber intake. Not too much though. But just enough so when youtake your dumps you clean out your insides and keep a flat belly.
Make sure you do a solid, sound ab program, at least two to three times a week. Once the fat comes off, you'll see the abs. It's fat loss, not ab development. But we want abs to be strong and developed to prepare for the fat loss.
So, remember, a 6 pack, means low body fat and no water retention.
Not doing endless hours of sit ups. It';s bodyfat and water underneath the skin.
Good luck.