The Metamagic Adept feat (TCoE, p. 80) lets you "learn two Metamagic options" and gives you "two sorcery points to spend on Metamagic".
The 2nd-level sorcerer feature Font of Magic gives them 2 sorcery points and allows them to convert between sorcery points and spell slots, but they don't learn any Metamagic options until they reach 3rd level.
If a character with 2 levels in sorcerer had also taken the Metamagic Adept feat, could they use all 4 of their sorcery points for the Metamagic options they learn from the feat?
(I understand that few 2nd-level sorcerers would have a feat, or have invested it in Metamagic Adept. This is mostly for high-level multiclass characters that can't spare a 3rd level for a sorcerer dip but want more Metamagic than the feat alone can give, along with the ability to convert spell slots into more sorcery points – like a Wizard 18/Sorcerer 2 build I am considering for a one-shot.)