Is my tort looking healthy?

[SonyaBlaze]

Hello,

This picture was taken a few days ago, while out getting some sun. I'm worried the shell is starting to pyramid. I give daily 30 min soaks, provide water in the enclosure and keep humidity level between 75-85% using a humidifier- haven't been able to control the humidity level any other way. When feeling the top of the shell it feels smooth but the bottom of the shell is a bit soft.

 

[ZEROPILOT]

Yes.
He looks good.
And as you've noticed, there is some mild pyramiding

 

[SonyaBlaze]

Thanks for the response; I'm not sure what I could be doing wrong and how to stop the shell from further pyramiding.