RE: I think
Hi !
I don't know if that's better to pyramid up or down but I can say, that, in my opinion, having a second baby is a wonderful experience. Of course, you'll need a time of adaptation but after that, I assume that you won't have too much difficulty to find time for yourself and so on.
After the birth of my #2, my older one ( he was almost 2 yo) wasn't jealous immediatly. But 3 months later, we could see signs of "jealousy", when the baby began to laugh and be more "present" in the family.I need to say that we moved just before that. After a while, # 1 understood that the baby did'nt "steal" his parents and that his young brother was interesting to play with and everything became better.
Each time we had a new baby ( our #6, our first daughter is now 3 months old)we need several weeks to find a normal rythm of life but I think that the more difficult time was after the birth of our second child. "Adding" more babies was easier...perhaps because the children already knew that they could be several and still receive the love of their parents.
Having "me-time" is not so easy but, as I age ( I'm 32 yo now

)I need less sleep ( Thanks God !) and I really love to exercise, that's so relaxing after a busy day !
Enjoy the end of your pregnancy and try to sleeeeeep before the birth. The first weeks are so tiring but newborns are so cute too !