Hi, I'm back with good news
I've built the circuit according to your suggestions (and drawed it =>attachment number 1), and it works
Hope it's more or less complete. As you can see I didn't use limiting resistors on the gates, I heard somewhere that they aren't necessary for MOSFETs, am I right?
I also measured the current the circuit draws in the shutdown state, it's about 58 microA.
I tried to improve the circuit and it occored to me that I could use my enable pin of my vreg, instead of the N channel MOSFET . (I think they do the same in this case) Luckily it worked as expected and uses even less current in the shutdown state (about 29 microA)
I hope everthing is correct, otherwise tell me
I'm grateful for your responses, you helped me a lot.