Is switching therapist (when they are colleagues) bad?

So I just found a new therapist and she was great but she is on leave for a few months (she let me know this before I decided to see her). She recommended another therapist for me to see until she gets back so I just started seeing the new new therapist. I’ve only seen my original therapist twice and by the time she gets back, I would have seen the new new therapist way more times. I’m worried that after a few more sessions, I may want to just stick with the new new therapist but I don’t know how that would look between them since they are good friends. Right now, I’m still happy about seeing the original therapist when she gets back but I know that can change. What’s the proper way to go about this?