I wouldn't worry too much if you sanitation was spot on and your pouring careful.
Try and get a consistent modus operandi for bottling. Use a checklist the first few times if it helps. Carbonation drops make this easier - so easy in fact I swear by them.
If you are worried about forgetting the odd bottle for priming, batch prime in a second sanitised vessel then syphon into bottles using a bottling stick for ease.
I use a bottle rinser, no rinse sanitiser, drying rack (home made), carbonation drops and a bottling stick attached to my primary FV. I do two batches of 20 odd bottles. On my own, I can bottle 40-42 bottles in 1.5 hrs tops. With help from son No 1, we can do it in 35-40 mins doing simultaneous jobs!!!