I have some senior colleagues in their final year of PhD. busy most of their time and in quite stress (as much any last year PhD student). we share a lot of history together. and also have some sort of common academic fields interests. It has been a really long time since we got together.
I am interested in partnering with them doing some projects together. What is the proper way of connecting to them ? what the best way of explaining what i would like to do with them. I am afraid that an extra profession email would be silly but also a too friendly one would be understood as unserious.
If i happen to talk to them what kind of topics that should not be brought up? for a PhD student in his last year of program.