Also check out the care guide on the main page
If you look over your husbandry - rather than having us ask a bunch of questions about your set up and going back and forth with us here - and make sure it is pretty much on the nose with that care guide, things should improve. Sometimes just a little tweak can make a huge difference.
A couple of weeks without feeding isn't the end of the world... try not to stress YOURSELF too much.

If the husbandry is tip-top, as the care guide recommends, then you should try looking into some of the feeding suggestions. There are TONNES of posts on how to switch from live to f/t! Very helpful

Best of luck!