Some Questions for seasoned Gateway meditators

Hello I am fairly new to the gateway tapes, though I have been quite regular over the past month. I have a few questions which I would be glad to get answers to:

1. All the tapes are in sequence and meant to be done in the order they are in, this I understand but is it alright for me to revisit older tapes, say go back to the basics and do a few of the meditations in WAV 1 and not go through the whole sequence again, but do one or two of the older tapes as I wish, though I have moved on a ahead to say focus 12 ?
2. Is it ok for me to do multiple tapes in one day?
3. For how long should I be on each tape? It says one month patterning, does it mean that I do it for a month or it will take a month for the desires to come to fruition?
4. How do you all understand when to move on from one tape to the next?
5. I had quite a few strange experiences at the very beginning, like weird dreams in other dimensions, hearing sounds, seeing and feeling things, but now nothing much apart from good sleep. Was that beginners luck? Does this happen to others as well, that the experiences plateau out?

Thanks for reading!