So I haven't really been having a very good REU experience. My advisor has not made himself very accessible and I probably only spend like 20 minutes a week talking to him. Most the time I'm not even sure what I'm supposed to be doing so I haven't really been working very hard on my project and have made very little progress. I barely ever even see my advisor and don't feel like he knows me at all and I haven't done a very good job on my project so should I even ask him for a recommendation? Would it be worse to have a not that good recommendation from an REU advisor or no recommendation at all?