No. He was not taking on any more companions. He was done. He would not put anymore lives at risk. Absolutely, under no circumstances, would the Doctor be putting any more lives in danger.
But since they both appeared to be trapped here.
He pulled out his sonic, "I want you to call the TARDIS if your timey-wimey vision senses anything off. I'm not asking you to look, I wouldn't ask that. I'm just saying if you happen to see anything, like, an invading Cyberman Army for instance, that you leave a message."