Everyone is different, but if that were MY macro split, I'd bump protein and reduce carbs, and maybe fat.
You've been around awhile. Do we need to look at your meal plan? or have you already posted that?
Here's the thing. When cutting, you will always lose some LBM. Get used to it. However, let's consider HOW you lose LBM in relation to BF%
Just say you are 20% BF. That means you are 80% lbm.
But let's dig deeper.
Assume your skeleton weighs 20% and your internal organs weigh 12% of your total body weight.
So this is what we end up with
Attachment 141245
these (skeleton and internal organs) are national averages based on body weight, but my point is, you probably have a muscle to fat ratio of 2.4:1, but you are losing muscle at a much slower weight than your current ratio. Your current ratio is somewhere in the neighborhood of 1:1, which means you will run out of fat to lose much quicker than you are burning through muscle.
But here's the kicker.
When you bulk, you have to add muscle at a higher ratio than when you cut, else you truly will be losing ground.
These ratios will be much different for everyone, and what I just told you is based on generalities, and not specific to you.
So do not despair! You are losing the dreaded fat, but now you see why the muscle, when lost, is such a concern.
the other thing to think of is this...
some people lose fat easier than they can gain muscle.
others can gain muscle easier than they can lose fat.
so you will have to consider where you are in this spectrum, and once you get to the target bf%, then learn to do a clean bulk?
just some thoughts mate.
Good luck!
---Roman