Wow sounds interesting! I have only had a chain of dreams in one night instead of spread out across 3 nights. Although I think I have had nights when I have had similar story lines and characters.

To be honest though, I doubt you will finish that dream off I suggest that you try self suggestion and repeat to yourself "I will continue that dream" before sleeping each night. Apart from that there isn't much else I can suggest, sorry

Oh and welcome to the forum!