I'm wondering if your approach isn't arse about faced?
{clause 1} If you just want to buy another bike by the way, totally disregard this and go do it.
{clause 2} Likewise, I don't think I've ever met you so I don't know if you are 35Lbs soaking wet, doddery or really REALLY short legs, so if any of those are true, also please disregard this.
I think though (seeing as you asked

) you're looking at it the wrong way around.....you already have the right bike to learn on, you're just learning on the wrong stuff
Instead of going all the way down to an underpowered 250 (see my clause#2 though) that you will probably become utterly bored with in 3 months, why not downgrade the trails you're riding and get some confidence......even getting a new pair of wheels to keep as spare with some proper off road tyres will be a lot cheaper than getting another bike, and will help you get the confidence it seems you need (see my clause#1 though)
Trails can range from the extreme to just a rutted road, and with a bit of knowledgeable help from the guys here, I'm sure you'd find some 'beginner's trails' to go play on.
Within a couple of riding hours, especially if you can go out with Johnny or Timpo or Timothy or Gaylord or someone, you'll probably find yourself very happy on the Xcountry