A demotion to Triple-A isn’t an option for Ike Davis —- yet. But manager Terry Collins Friday acknowledged the Mets first baseman could be a candidate for Triple-A Las Vegas if his struggles continue for an extended period. Davis batted seventh in last night’s 4-0 loss to the Phillies at Citi Field and finished 0-for-2 with a walk, dropping his average to .169. “We’re not out of April,” Collins said, when asked about the possibility of Davis going to Triple-A. “If that discussion is going to be had, it’s not going to be had for a long time. You’ve got to have some patience, a little bit.” Davis turned his season around in June last year after a horrid start. The Mets considered sending Davis to in late-May, but ultimately stuck with him and watched him finish with 32 home runs. “During that time there were some ups and downs and certainly there were a lot of downs when you are in a slump,” Collins said. “But the minute you start giving up and the minute you panic, all 25 guys panic. The one thing you don’t want to do is start panic in that clubhouse, because you need those guys to stay positive.” * Top pitching prospect Zack Wheeler isn’t throwing enough strikes at Triple-A Las Vegas for Collins’ liking. Wheeler allowed five runs on six hits and three walks over five-plus innings against Tacoma on Thursday.