Beniamin,
If I am reading your response correctly, it sounds like you are trying to make liquid mycelium by soaking chips and squeezing out water and then using that water to propagate the new batch of
mushrooms. Is that about right. If so I would recommend the following.
1). If you really want to spread using a liquid, wait till the mushrooms grow and push out the caps. Gently cut and collect the caps, place them in a blender with water and blend them up. This will give you a liquid with lots of *Spores* that can then spread new spawns of fungi.
2). After your fungi has thoroughly penetrated and inoculated the
wood substrate (chips work best here), dig out a chunk of substrate and use that to inoculate a new batch of wood.
3). If the mushrooms pop up before you are ready (and this can happen) and the caps look like they have lost their spores, try gently cutting out the base of each mushroom and “plant” it in a new batch of wood chips. Note: you can still do this if you do option #1.
I hope this helps. Good luck and let me know if there is any other way I can help.
Eric