You have two paths to choose from-- all in, or incrementally

If you go all-in you're probably at least 5 years from being able to make a comparable salary to where you are now. When I say all-in, I mean that flying becomes your full-time job no matter which direction the money is going. You will spend money (a lot of it) to get to the point where you can start to make money (very little of it) instructing, towing banners, looking at pipes, or any of the other menial flying jobs that people use to build hours. Taking this approach will likely mean that you won't have enough free time to hold a full-time job doing what you're doing now (or pretty much anything else). Maybe your position would allow you to work remote and/or have enough free time to fly, but if you're making flying your #1 priority with the goal of maximizing flying time to shorten the path to a career you won't have time for a second career.

If you do it incrementally, it will likely take you 10 years or so. You can chip away at training when your free time allows for it, but you won't be able to fly as often. You will likely need more instructional flights. When you're just learning, the half-life of those skills is pretty short. You'll spend a decent amount of any given lesson rebuilding your skills to where they were at the end of the previous lesson. The same restrictions will apply to the hours-building phase. Since you're doing it part time, you won't be accumluating those hours as quickly.

I'd recommend the incremental approach if I were you, for two reasons. The first is it allows you to maintain your current quality of life and income, albeit you will need to budget flying into that equation. You will be able to train and fly without having to worry about burning through savings, or worse-- going into debt.

The other advantage of doing it incrementally is it allows you to off-ramp from your current job into aviation when the time is right. Right now, the time is NOT right. Guys are still getting hired, but it's not great. The major passenger carriers have drastically slowed hiring from what they were doing just a few years ago. The major cargo carriers (UPS, FedEx, Atlas) have all but stopped hiring entirely. On top of that, Spirit is about to go out of business, so the market is currently flooded with experienced airline pilots with ALPA backing to get them into airline jobs elsewhere. This trickles down to the regionals. Less demand at the top means less attrition to back-fill at the regional level. A wet-ink R-ATP and a weak pulse aren't enough to get you into a regional anymore.

If I were you, I'd just stay put in my current job. Sure it probably sucks, and is soul-crushing, etc. I can tell you from experience that an airline job ALSO sucks and is soul-crushing. I wouldn't want to do anything else at this point in my life, but at the end of the day it's still a job and jobs suck. Nothing takes the fun out of something like doing it for The Man.

Take your relatively strong income and put it towards getting ratings that benefit you, namely your instrument rating. Then buy a piece of an airplane and fly as a hobby to your heart's content.