I do think tiny insulin adjustments can help. Yes, it's tedious to have to test and experiment, but I make myself do it. I find moving the time of my bolus can make a big difference (for me, at least).
Another thing - and this may not be at all relevant - but, for example, I find if I skip breakfast or have a late breakfast I'm very prone to my blood rising. I now avoid doing that. Just one example of how little changes can help.
You mentioned your age and hormones. I don't know anything about your particular circumstances, but never underestimate hormones. When I was on the Pill, I put on weight almost overnight. I also found my blood sugar was higher than usual and control was harder. I'd never have believed hormones coukd have such an effect, particularly on weight gain, until I saw it with my own eyes.