If you dip the tungsten, best practice is to swap it out for another right away. You can re-sharpen the dipped one, rather than break it off. There's a lot of discussion about how to sharpen tungstens, so if you need a primer, just let us know.
OK to re-use filler from puddle to puddle, no worries, because ideally you keep the filler rod within the envelope of shielding gas. Jody at WT&T has a video devoted to three TIG pitfalls to avoid, and keeping the filler inside the shielding gas envelope is one of them.
Sounds like you're getting after it, good on ya!
DaveO
Oxweld oxy acet gear
IMIG 200
PowerTIG 210 EXT... Amazing!