If that's your only routine change it up. Train calves 2 times a week and don't only stick to hypertrophy.sometimes shocking the muscle through other forms of training can boost growth.
Try jump roping with double jumps and speed focusing through the calves for drive. Go as long as needed to pre exhaust the calves before your workout. If you aren't heavy enough add a weighted best and your calves will feel it. In the endurance route try explosive sprints.
You can do lunges which a calve push off.add weights and you won't want to walk for weeks.
How's your flexibility for calves? Don't forget to foam roll and stretch afterwards too to help with blood flow and range of motion.
All that being said calves are a genetic muscle
And your growth can be limited by genetics. Still doesn't mean you can't switch up routines and still see good growth though.