Mega Man

Here's the timeline of Lee's weight:

Birth: 8 lb 12 oz
He had not made that up by his discharge.
He had not made that up by his two week check.
He got sick so he managed to simply maintain his lower weight.
He had yet to regain his birth weight at his discharge follow up appointment.
Today he had a two week post-discharge weight check.

Today: 9 lb 11 oz

He's turned into a weight gaining champion.