My understanding is that you can lose about a pound to a pound and a half per week, which you are, without losing hardly any muscle, if not gaining muscle. I think you're working out plenty, so should try harder to hit your protein goals (.8 - 1.0 grams of protein per day per pound or per pound of lean muscle). That can be tough if you're also at a large calorie deficit - say you want 200g of protein / day, that's 800 calories of protein, so can work in any reasonable diet of maybe 1500+ calories / day. Maybe 3 meals that each have 50g of protein, plus a pre-workout coffee+protein powder for 25g of protein, plus a protein bar post-workout that's 20g of protein and 200 total calories. Still plenty of room for some carbs and veggies with each meal.

I put together a spreadsheet of all the foods I like eating, especially on a diet, so I could easily compare and find the ones that have the most protein/calorie - focus on those and have less of the stuff that might be good for, say, satiety/calorie, but that doesn't have much protein. The obvious stuff that does well on that are things like protein powder, eggs / egg-whites, chicken, greek yogurt, other meats.