As for sections of the blog, don't take too much on yourself. Get them out one at a time. You do not need to keep any deadlines - this is a fun project, not school.
Don't be afraid to make changes. Even if it won't work, at least you have more experience to build on. Change your style, change your theme, change the color palette, change how you'll treat Seasonals. It's your blog.
Give it a rest. If you'll do things just for the sake of writing about them, it will loose it's soul. Treat blog as a way to reminiscent. Not as a way to track everything perfectly.
You're growing. And you will keep growing. Don't let the time run through your fingers. Have fun, that's why you started it.
I changed the blog theme, I got obsessed with Subway Surfers (...yeah, not too proud of that one), I made huge plans and I keep discovering myself. Finding new friends, learning how to deal with a-holes, making mistakes & correcting them. Look at you! You handled all of that without feeling depressed or thinking you'll die!
You have so much to look out for. Treasure your time. And make the best out of it.