Start easy. Keep it simple. Focus on making it into a habit. Not for 12 weeks. But to turn it into a lifelong routine, no different to brushing your teeth. You can always ramp it up later if you want to.
What’s the most efficient, sustainable and safest way to get to your goal? Not for everyone, but for you? This includes frequency, exercises, type of training and the environment. I’m sure there’s more.
There’s absolutely nothing you have to do. If it doesn’t feel right for you, don’t do it. Find an alternative that feels right.
Just because it’s uncomfortable doesn’t mean that you shouldn’t do it. It could mean the opposite. Maybe it’s a sign that it’s time to lean into that discomfort.
Never compromise longevity for performance. Both short or long-term. Unless you get paid to do so. Or have the financial and emotional funds to dig yourself out of it. Even then, it begs a question whether it’s worth it.