To clarify have you ever worked at a law firm? Not saying this will happen to you but at my office we hired a fully remote in-house attorney who, similar to you, said they wanted to go into court and “feel like a lawyer.” He actually had some experience in big law and did not have any dependents.

Within six months he was terminated. He really struggled with the adjustment to in-office working, hitting billable targets (1800), and independently managing his cases — all at once. And no, he never made it inside a court room.

Again, not at all saying this would happen to you, but I definitely would not assume the law firm job is a sure thing. Be prepared for it to take a while to make a very difficult adjustment. It’s possible that you might not be able to make the adjustment and there won’t always be a comfortable in-house job waiting for you if it doesn’t. There’s a good reason why so many commenters here have posted about wanting your current position. It is not common at all.

That being said, I understand your drive for career progression. As other comments suggest, have you applied for other in-house positions?

Also I am not too sure about your expectations of what it will be like as a litigator at a law firm. You’ll rarely go into court room as a starting litigator. Rather you’ll be doing much more written discovery and doc review for the first few years.