I only have one 6 inch round pan, so I can only bake them and cool them seperatly...will thatg affect anything? I need to bake three batches.
Yes, you can. That's not a problem. I would do each batch separately, rather than doubling up to minimize how much batter is sitting waiting. Some will say the batter will be fine sitting in the bowl one the counter, and others will say to refrigerate it while waiting. I've done it and left my batter on the counter for the 30 or 40 minutes. Just make sure that you cool the pan before filling it for the next cake. It's not possible to go and buy a second pan?
Oh it is! But I don't have the time right now to run to Miachaels or Walmart to pick up a pan. I'm very pressed for time.
you could also bake a layer in a larger pan and cut it down to size