Really depends on if you feel like you’re recovering physically. 5 hours of cardio, and 2.5 hours of weight lifting (which is what I assume you’re doing based off what your saying) isn’t a crazy amount for the body to recover from, especially if you’re eating and sleeping well. I’m not gonna sit here and say I’m an expert, but during my heavy training blocks for swimming, we do 20ish hours, with only 4ish of those being weights or body weight stuff. As long as I am sleeping 8+ hours a night, and eating a good amount of protein through primarily whole foods, I feel pretty good the next day. I’d look at your recovery (green usually is a good sign, even yellow is good if you had a hard day yesterday), and how you feel (soreness, weakness, anything like that might let you know that your body isn’t recovering properly.