3WR League Advice

I have Thielen, Robinson, Landry, Davis and Baldwin in a .5 PPR 3WR league. I’m in first place but this WR group has limped me into that spot. I need upside off waivers. I’m currently starting Thielen, Robinson and Landry, but don’t feel great about it. Thinking about dropping Corey Davis (I can still drop him because I didn’t play him) and Baldwin for Zay Jones, David Moore, Curtis Samuel or Anthony Miller.

Keep who I have or grab for upside or depth?

Drop Baldwin for Miller or David Moore