u/According_While2124

I found a tiny RES in my yard a few days ago. They're not native here and I have no idea how it got here. It was cold at night so I brought it inside. I have an aquarium set up for it now, with a heater, heat lamp, and basking station. I have seen it up on the basking dock before, but now it acts like it's having trouble getting up on it. It isn't eating the juvenile turtle pellets I got for it, and only seems interested in lettuce. It has pooped several times though. Can I do anything to encourage it to eat, and to make getting on the dock easier? Or should I let it figure it out on its own? Any tips are appreciated since I'm a first time reptile owner.