Another classic example of "buy now & I'll figure out what the heck to do tomorrow" approach to keeping reptiles.
Your enclosure is inadequate to say the least. The good thing is that you recognize that & are ready to make adjustments.
I'm sure others on this forum will spring forth shortly with good advice. Multiple care sheets are at your fingertips.
One quick thing. That high dome saucer may allow it closer access to the UV or temp lights but sux as a hide. No Uro in it's right mind feels comfortable in anything but a wedge bed.
I'll step aside.