Congrats on getting clean! And your new family! Life has handed you a lot, and I'm proud of you for trying to get things straightened out.
Usually a bypass is a one-and-done type procedure. A skilled surgeon can evaluate you to see if there is any "tweaking" that can be done, but it's better for you to focus on non-surgical options.
Your stomach is still small, and your bypass is still in place. Those will continue being helpful (probably why you didn't gain ALL the weight back and more!). But at this point, it's time to get back to basics. Protein, vitamins, water, nonstarchy veggies, limited fruit and starchy veggies. No sugar or white flour.
Weight loss won't be as easy as it was the first year after surgery, but it IS possible! Good luck!