Better than you, I wouldn't be so sure about that. My ftp is only 185.
1. If I stop weight training, my glutes will become weak and I get knee injuries.
2. Yes, I have a heart rate monitor, a power meter, and I use trainingpeaks.
3. No, although I do struggle with protein intake. I find it hard to eat enough. I supplement it with dairy. I have no idea what the name is in English (in Dutch it's Franse kwark, but it's not French cottage cheese), but it gives me 50 grams of extra protein per day. I have had covid in march 2020, although I'm fairly recovered from that and I've been struggling with this for far longer.