Everything is correct, humidity a bit on a lower side, try to keep it around 75, no lower then 70.
I suggest you do a warm water bath with a few drops of natural honey for him, water level no higher then frogs, keep him in there for about 20 min, you can very gently massage his sides, both of them, repeat for few days in a row. The side he is leaning towards is where his stomach is, but it doesnt look too bad.

Is he eating from tongs? And aggressive eater in general? Try pieces of nightcrawlers, they are way better choice then crickets, and will definitely help with blockage.

Edit - you also need to get multivitamin powder and use it once a week, and ca/vitd3 2xweek.