Muscles get stronger faster than ligaments. And since you’re new(ish) to working out, your muscles are building strength that your tendons and ligaments may not be ready for, which could increase the risk of injury.
It wouldn’t be a bad idea to add some variety to your workouts. Isometrics and static holds, work your muscles in a different way and build your ligaments and tendons. Bodyweight exercises and calisthenics develop balance, body control and overall proprioception (awareness of your body in space) This will keep you in the gym while letting the rest of your body adapt and catch up to the gains your muscles are making.
As middle aged men there’s a lot more facets to strength than lifting weights in the gym. Building balance, body control and proprioception allows our bodies to incorporate our strength and muscular gains into a literal armor that will protect us as we age.
Good luck and keep on keeping on!