I am a bit confused about the gear.. the dr ordered a 1cc with 22 gauge but the pharmacy doesnt have that set.. so i got a 1 cc with 25 gauge 5/8" was the longest they had.. and 18gauge needle .. so at this point i have to take the 25 off put on the 18 draw the solution then switch back to 25.. seems like a lot of switching.. is there an easier way to do this?

i can't get a decent measurement on a 3cc syringe.. thank you