Check these Barre chords out. Your fingers need to have strength and this is one way of doing it. Keep attacking those strings with the exercises in the pdf below. Then when you play them in a song they should be much smoother. Its a good way to warm up ALL your fingers as well. Soon barre chords will be a piece of freaken cake!
The speed of memorization doesn't matter. Meaning if it takes you a while thats fine. It takes us all a while.
The workout is in the first 2 pdfs. The last 2 pdfs contain 3 and 4 string barre chords which is more of a theoretical style lesson. It shows you the chords in a key using barre chords.
To keep from going insane on what to practice use CSAS. Chords, Scales, Arpeggios, Songs. Or Just start with one of them. (C.S.A.S)
Happy Rocking. Please comment and let me know how I can better serve you. Have a great week!!! Party Hardy...But Play Guitar Hardier. Call in sick if you want too.