Melanie Paige Smith doesn’t let T.O. breath.

When he got signed she ran to court to make sure he couldn’t reduce his child support payments even though it wasn’t guaranteed he would make team. He gets cut, but she still refuses to allow him to reduce his payments even though he doesn’t have any steady income.

Instead she is trying to block his payment reduction while T.O. is searching for another opportunity.

T.O’s fourth baby mama — a woman named Melanie Paige Smith — filed papers earlier this month to BLOCK T.O.’s request to lower his massive child support payments.

In the docs, Smith’s reasoning was largely based on the fact that T.O. had recently inked a deal with the Seattle Seahawks, for close to a $1,000,000 … and could afford to continue shelling out for his kid.

Smith’s attorney — Randall Kessler — tells TMZ … T.O.’s career snag won’t affect his client’s request to keep the dough coming — at least for now. Instead she has her “fingers crossed that another team picks him up.”