Yours are growing very well, Like you, I have supplemental feeding, can’t tell if the LMB are eating the food or just the forage that is eating the pellets 🤷🏼♂️. Mine were stocked 10/15/23, Not much growth over the winter. They still looked pretty small when I first saw them in April 27, last photo, should have gotten a weight and measure These 2 were 11” - 1.03# (7/10/24) and 12” - 1.28# (7/11/24) so definitely not the same growth rate. FWIW the SMB are growing at about 85% of the rate