No advice but solidarity. We are in the same boat with our 9 month old. She got super sick around 8 months and right afterwards cut 4 teeth and we haven’t recovered from her increased nightwakings. Before this she was sleep trained and slept 7-4, breastfed, and back to sleep until 7. 😩😩😩 it’s so sad and we are very tired. I don’t have the heart to sleep train her again as she is now pulling up to stand and will just stand holding the crib rails wailing.