But you pretty much have to full from the top then put in the plunger. - Then i turn it upside down and continue to tap it forever until it sinks to the plunger end. That way i can press out the air without the CC going everywhere in the process.
I had no luck with CC tho. Fortunately i found EFL which i chin loves to the point where i can put in in a bowl and he eats it all, no syringe needed 0.0