if you give it a few years, you'll pack on some more lean sinew - I find myself as slim as I was 5+ years ago, but a lot heavier. I'm 94kg now, but no bigger than I used to be. Managing your hormone levels is also key as you get older. keeping cortisol at bay during recovery, getting lots of sleep, and lots of the right foods.
To punch past a plateau you need to do more accessory work I find and really innovate a little on what you're doing - whether it's sticking points, mobility, or something else altogether. I did a 6 week programme of intense high volume (I threw up twice!). The weights weren't big, but the volume was brutal. I then went back to my more regimented PL progression programme, and after a couple of weeks blasted past some of the plateaus. Added to that mobility and alternative movements it really unlocked progress.
it's at about 50% strength at the minute, the usual assortment of problems from lowbar. It is rapidly improving as I've learned some new things to improve my flexibility in that area and just not annoy it in the first place.
You'll win I fear... my shoulders are not great.
