You can supplement with a protein powder. I always keep naked pea in my pantry for the odd day I feel like changing it up. Powdered peanut butter works for me as well.
You might want to look to whatever other foods you’re consuming as well for further protein supplementation. There’s a misconception out there that you need these massive amounts of protein to build muscle… I currently weigh 244 and get on just fine with 120-160g of protein per day; mind you I dropped about 100 lbs and am curently working on getting definition/leaning out and building/maintaining muscle all while still working on losing 25 more lbs. with positive results.