This is some very good advice from Aikithoughts for beginners in aikido. I'll probably proudly steal it and give it to all my beginners. I particularly like the "commit" part. It's the same advice I give my cardiac rehab patients - The frequency and intensity of training don't matter as much as the regularity.
I, of all people, surely know about being busy and having a life and I understand all that. It is good and necessary to do other things. Aikido is not religion and it is not family and it's not employment - so it's pretty far down most sensible folks' lists. But you get the most benefit from consistent attendance - even if it is once a week.
(And again, I'm not ragging on my current students about their attendance. I'm just stating a fact. ;-)