I feel like that sounds a little light to me. Don’t go off the deep end now. But I think you could be feeding a little bigger prey item. A rule of thumb is that the mouse should be 1 ½ times the largest diameter of the snake. It should make a bulge in the snake that takes 2 or 3 days to go away. With a snake that age, every 7 days is a good schedule. Some people would say more often but it is too hard to keep track of every five days. It’s easier to say every Friday.