maybe get a fidget toy?

Sometimes a fidget toy, sometimes meds, sometimes sensory grounding, sometimes therapy. All these things can help- the more you try the more you learn :). I have found it also helpful to see if I can find what is causing the anxiety (or more realistically what a piece to the anxiety may be at that moment) and verbally saying it and seeing if there are solutions to it. Doesn’t always help but sometimes it’s the straw that breaks the camels back and being able to remove that piece of straw helps to calm the whole body

Are you on meds for your anxiety? It might mean they've stopped working or you need a higher/different dose. Otherwise has there been any life changes? Or even subtle shifts? Ex. More being put on your plate at school/work, changes in relationships (romantic, platonic, and/or familial), changes in your health, etc. I find when deadlines are approaching, my anxiety ticks up. Or if things are a little tense with my boyfriend, my whole life becomes a little tense because that anxiety seems to overflow. I find a little introspection, maybe with the guidance of a therapist, can help find the cause - which can help you determine how to resolve it.

Are you eating a lot of processed foods?

You could try exercising, especially when you're feeling that restless and anxious. When your anxiety is really high, it's because your fight or flight response is triggered. There are a lot of powerful hormores in your body then making it so your heart can beat faster, muscles can work harder/better, breathing can quicken, etc. By exercising, you can "burn off" or "use up" those hormones. It's not good for your heart to run so hard and fast without it actually needing to. So, give it a reason to. Exercising to reduce anxiety is just a good idea in general. Exercise is just good in general - certainly no harm in it anyway. Especially if the symptoms you're experiencing are those sort of restless feelings and manifestations, it could be a really effective intervention.