Certainly, updating your base implementation is always going to be some work. Then again, hopefully that also provides more benefit to your game than the work it required from you. (And if not, you can always decide to stay on an old version, though this essentially dooms your game IMO).
I started with Lyra in 5.0, updated to 5.0.2, then to 5.1 and now to 5.2. So far each upgrade has been relatively easy. I documented how I’m doing that on my dev notes.
There is another dev, @BastianDev, who is working through Lyra with the goal of working exclusively in BP. He has made some excellent tutorials along those lines.
If you’re maybe possibly considering Lyra if you can do it without C++, check out his stuff: