If it wasn’t cloudy before you added citric acid, the subsequent cloudiness generally means you’re on the right path. The larger volume will reduce crystal size, so at this point you may not see more than what looks like specks of dust on the glass. My advice is to hold your horses until, at least, the 24 hr mark.
Most presses, the plunger can be unscrewed from the strainer, then the strainer can be pressed against the paste to get some additional liquid out. I don't advise doing this until the last pull, so that you don’t get fine sediment going through your filter, but last one can get a lot out.
I have several different size presses, but a 4-cupper can do the job on 15g, it’s what i just used for the five 15g runs I did earlier today. It isn’t critical to squeeze the paste, especially when your learning goal is not yield, but should be getting the proper end product. A 2-cupper, though, works very well with 15g runs, once you nail the tek.
Hang in there, you’ll nail it.
[Not to make you feel bad, but to give a future reference point, my 5 jars were salted 3 hours ago, all jars covered with 3/8” snowflakes]