I'm creating a sorcerer for a game and can't find a feat that allows me to change my spell slots into spell points, am I mis-remembering this feat's existance?
There is no such feat in D&D 3.5. Spell Points are a variant rule (replacing most slot-based magic in the game world), not an option accessible to individual spellcasters via feats or similar customization options.
To increase the flexibility of a Sorcerer via feats, I suggest the Versatile Spellcaster feat from Races of the Dragon. It allows you to use lower level slots to power higher level spells - not quite Spell Points, but often close enough.
Usually you just choose to use a spell point variant when you create the character: there’s no feat involved, it’s just something you ask your DM if you can do. I suppose a DM might decide that you can only if you take a feat, but that’s not part of even the variant spell point rules suggested by Unearthed Arcana. Actually, the only d20 System game I’m aware of that does have such a feat, here called Manyspell Magus, is Rule of Cool’s Legend.