Ozodrin (5E Conversion, PEACH)

[sallyisgreat]

Your solution seems reasonable to me. You could probably consider borrowing some of the language of arcane recovery.

Spoiler: Arcane Recovery

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You have learned to regain some of your magical energy by studying your Spellbook. Once per day when you finish a Short Rest, you can choose expended Spell Slots to recover. The Spell Slots can have a combined level that is equal to or less than half your Wizard level (rounded up), and none of the slots can be 6th level or higher.For example, if you’re a 4th-level Wizard, you can recover up to two levels worth of Spell Slots. You can recover either a 2nd-level spell slot or two 1st-level Spell Slots.

More specifically I would suggest drawing on "Once per day when you finish a Short Rest, you can choose..." which limits the number of times you can rearrange form points using a short rest without over complicating things. Whether or not the rest of it is of any use in balancing your trait would depend on how you value form points in relation to spell slots and such.