Such cutie pies! They will learn fast if you are disciplined with a schedule for a solid week. It takes sacrifice but worth it .I took my dog (13 month old rescue Golden 2 years ago), on a strict schedule.
As soon as I was awake, out he went.
Then I got my coffee He had to wait. Then I fed him, watered him, and waited 20 minutes. Out again, led him to where I wanted him to do his biz. If he only peed, I took him out 20 mins later. Repeated until I realized his bowels took 80 minutes to work. LOL and TMI? then every day after that, same routine. Morning pee, food, wait 70 minutes, put him out under the trees in the far corner, witnessed his biz, rewarded him with playing tennis ball with him. Funny thing is he's more likely to "go" when he's got a tennis ball in his mouth. It's like taking a book to the bathroom. LOL. Your little gals will eventually get the hang of it, but you really have to commit to training and clear your schedule for the time being .