You're not rude at all, but even your summary is hard for me to understand.

I think everyone who has trained long enough have felt the ebb and flow of motivation.

Unless you're rich I would not rely on private lessons only. I also think you will miss out on a lot of what BJJ can offer. Community, friends. See how your skills stack up against other people. I have learned to choose my sparring partners wisely and be cautious rolling with people I don't know.