You too, @tomjansen......
Sorry I cannot advise you on what to do. I've been doing this for decades, and I always try to gain as close to full SA as possible before coming up with a migration strategy.
This approach has served me very well over a long career in this area.
Often, the fastest way to solve a problem is to slow down and understand what exact problem exists before trying to solve it :). The solution is usually the easy part. Finding the exact problem is the harder part. This requires instrumentation, observation and analysis. That's how I have worked for over three decades in this field.
Cheers!