So, thanks to the advice of the @keshlam, my plan was accepted (this plan is designed for approximately 3-4 months, as the head asked). He responded like this a couple of days ago:
Good afternoon, Name! Thank you for the prepared plan, it is quite suitable, and we will continue to adjust it as we go. For FPGAs, I suggest focusing on radiation-resistant models. As far as I understand, they are based on the FPGAs we are used to, so we can use Verilogs written by colleagues. If you need testing equipment, let me know! Sincerely, Mr. Professor.
But what worries and excites me. We have been communicating for a little less than a month, and during this time issues related directly to employment have not developed in any way. Yes, it seems like they are preparing an employment contract, but I am practically not involved in this. They don’t ask me for documents, any clarifying questions, nothing. The only thing I heard was “in our organization everything happens slowly because of the bureaucracy”.
Maybe it’s worth reminding or showing patience, what do you think?