up to your elbows in
up to (one's) elbows (in something)
Extremely busy (with something); deeply or overly involved (in something); possessing, filled up with, or overwhelmed by an excessive amount (of something). There's no way I can take a vacation right now, I'm up to my elbows in work at the moment! I only intended to be peripherally involved in David's business venture, but, before I knew it, I was in up to my elbows! Dana was worried she wouldn't find any work as an accountant working for herself, but she's up to her elbows in clients!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
up to your elbows in1 with your hands plunged into something. 2 deeply involved in. informal
Farlex Partner Idioms Dictionary © Farlex 2017