It does look like it might be on the mend. It helps a lot to take a pic from the same angle(s) every day and compare them. You want to look at those pics and determine: Is that yellowing getting any worse (or better)? and same thing with the brown spots; are they continuing or slowing down.
The leaves with brown will continue and die so don’t be too concerned about them so much as the newer growth.
The growth up top is what’s most important to watch, is it coming in steadily and healthy-looking? Past that, it’s a measure of how fast/slow are the other leaves dying off (or did it stop).