I'm going to attempt to break down the first dream, but not the second, for now.
I think the symbol of being with your high school friends is symbolic of your self as your personality, i.e. the "false self" product of our upbringing and environmental influences such as our peers, the place where we grow up, our parents, etc.
In the restaurant, I think it symbolizes prioritizing pleasure and other basic needs of our lower centers, material things of third density, contrasted to the church, which I think may symbolize a religious part of you, religious of course in the context not of mainstream religion but of the FOTCM and it's principles, or just of seeking of a higher truth, or the Work.
The baby symbol could mean a new self, or true self, essence, or a center of gravity (in Gurdjieff's terms), also looking at it from the point of view of the Second Birth, spiritual birth.
With these symbols in mind, let's look again at the three parts.
In part 1, in the restaurant, where we can say you are enjoying material and earthly things, you drop to the ground in fear, put your head down, and close your eyes, as a result, the bad guy or whatever comes along and injects you with a vaccine. You end up being a victim in this part. Perhaps this means: continue as you are, and you will not have the ability to defend yourself from whatever.
In part 2, being at a church, the spiritual/religious part of you seeking to grow, you LISTEN to the feeling that something might go wrong, and as a result become aware and try to do something proactive, meaning going near an exit, looking for somewhere safe, etc. Here, you're learning about maintaining your awareness, and EXPECTING ATTACK, and being prepared just in case.
In part 3, Using the knowledge you gained in part 2, of becoming aware, and EXPECTING ATTACK, you were ready to react, rather than being a victim, took the baby(refer to symbol above), and were able to get to safety with the help of others.
To summarize the above, I think the dream may be wanting to tell you that you must develop certain parts of you, become more aware of the changes going on in our world, in your life, in your environment, and in your self, and start acting on them. I think this is a call to action, a call to keep learning what you can while you have the chance, so you can act like in part 3 rather than in part 1.
At least that's what I'm getting from it, could be wrong. I hope that helps.