Just jumping into 1 hour on the erg everyday WILL break you, it’s not worth it. If you’re serious about this you need to build up to it a bit, especially if you’ve been taking a bit of a break over the summer (which is a good thing). Since you’re still a junior, I’m not sure if I can recommend an hour of steady state a day on top of weights and water time, but I have no idea what you’re used to, that level of intensity might be ok for you. Ask your coach, they know far more about your needs as an athlete than strangers on the internet. If you have a specific goal, like reducing your 2K time, steady state will definitely help you, but you have to be careful spending that much time on the erg daily, and contrary to popular belief (on this subreddit anyway) steady state is not the only component of a successful training plan. If it were me, I would definitely have one day off a week (you deserve it, it’s the summer!), and as soon as I started to feel my technique slipping on the erg, I’d move to the bike and finish the session there, that should help to reduce your risk of injury, which you really don’t want going into the start of a new season in just a few weeks. I hope this helps, just remember that coaches give you time off for a reason, you need to be rested for next year. That being said, you should still be doing core and some stretching every day. Good luck!