Schlottmann, a 6-foot-5, 285-pound prospect, now has offers from Rice, Tulsa, Texas State and Northern Colorado. Several others have come by in the last couple of weeks.
"Recently it was Texas Tech and Tulsa and Rice and TCU that have come by," Schlottmann said. "Missouri and Iowa State have, too."
Schlottmann took visits to Baylor, Oklahoma, Rice, Texas A&M, Texas Tech and Texas State before the spring evaluation period began. He said Texas A&M is still showing interest, though the Aggies haven't yet come by Brenham.
"Coach [Jeff] Banks messaged me on Facebook and said they should be coming by in the next few weeks," Schlottmann said.
After a foot surgery last spring, Schlottmann didn't always feel 100 percent last fall but this spring he said he feels great physically.
"I'm good," Schlottmann said. "Perfect."
Schlottmann, who said he hasn't decided which summer camps he'll hit -- though he will attend a few -- said it has been an enjoyable experience performing in front of college coaches this spring.
"It's cool," he said. "It gets you a little nervous, but it's fun."