>>10910048Sounds considerate. Definitely address the credit issue. At the end of the day, you should have certified somehow that you did said lab work. He probably only has to sign some formular or so for it, which you may have to fill out.
And just some general advice: Your professor is just a human being so don't be scared to ask him things. I struggle with doing that and it bited me in the ass at times. If he doesn't have time or the responsibility to do something for you, he will tell you. Communicating about times and results shows you are invested and willing to organise this beyond just physically being in the lab.
Small anecdote to this: I am doing a project right now at an abroad university (graduate student) and had some anxiety about not finding a place to stay under the week. The person I now live with did not want to set up a formal contract and I only learned shortly before saying yes that I could get evicted as a subtenant because she did not ask. My professor here asked some tangential questions about it and being the only native in the group here, I had no one else to really ask. I just asked him for 2 minutes of his time and he repeatedly came back to me to give me his opinion on the whole situation. You would think he doesn't have to care about where I sleep at night and he barely knew me at that point, but he did care enough to invest more than a hour of his day just to talk to me and help me sort that out.