I started helping perform dry lab research within the first few months of starting undergrad, with a resident at a hospital in my area. The stuff I did was really basic (data collection from patient charts). Recently, I started working as a student researcher at my university's affiliated hospital, with a PI who seemed really kind. I was given a systematic review project to work with another upper year student. This PI was willing to take me on the spot during my interview and said that I could work with him in future clinical studies that he will be conducting, if we (me and the PI) work well together. He has assigned us (me and the upper year student) to work on everything in the research process (search strategy, data collection, analysis, manuscript) and he is helping us along the way, and basically said that he's hoping to get this journal published with us either as first or second author.
However, because I am still in my first year of undergrad and have only done basic data collection in research up until this point, I feel a lot less adequate then this other individual I am working on the project with. I don't really know about anything in the research project. For example, he asked us for input on the search strategy he developed for us to get us going, but at the time, I had no idea what a good search strategy consisted of. Whenever I ask my PI questions, I get really intimidated because he answers in huge thorough paragraphs. When he asks for our suggestions and I suggest something that I think could possibly work (based on my knowledge from solely researching the topic by myself), he always writes a huge paragraph as to why my suggestion wouldn't work. I feel like I'm not even contributing anything substantial because I'm always so confused and my ideas never seem to be good. I feel like I'm asking so many stupid questions. I'm worried that he will think that I'm inadequate to continue researching with him in the possible future.
Any suggestions for my current situation?