You have many options. Lift blocks work just like any other block suspension lift. But I suggest sourcing some new leaf springs and longer shackles/front hanger with larger tires. The longer springs you can fit the better.
Or if you're lucky and your trailer is a spring-under-axle you can just flip it to a spring-over-axle. But in doing that, make sure you don't just literally flip the axle. Over time the axle will have a natural curve to it (some even come like it) so weld on some new spring perches.
But once you lift you have to think about center of gravity. Trailers will always have a higher center of gravity than your tow vehicle. Think smart about weight distribution. For instance, I lifted my trailer and it has a 40" tall box on it with a RTT and awning on top, but at the same time I put a 65" axle under it to widen the track (originally had 48"), I have an aux battery at each side, jerry can and propane on each side, all mounted as low possible all as far to the sides as possible.
You also have to match your spring rate to minimize bouncing or bottoming out. But most importantly, just use common sense. Sometimes accidents happen but 99% of the time they're avoidable. Drive slower, take different lines if you're off road, have a spotter, etc. Again, make sure your springs are properly matched to the weight and the weight is properly distributed within the trailer and as low as possible. And if you can, install some simple shocks to the setup.