100+ lbs overweight? Dude, I’m going to be very direct and up front with you. If you fix your diet first/foremost you’d see drastic results. Results that obviously are accelerated with compound lifts, and intense cardio. Do you know how many calories it requires to maintain 100 lbs of excess body fat?
I’m glad you’re taking this seriously.
now all that bullshit aside, the answer to your question is… probably not want you want to hear. At 40 years old, and a declining pool of free testosterone, and all anobolic steroids aside, someone like you only needs to lift twice a week - push it to three times if you really want, but, unfortunately given your age you’ll experience diminished returns to scale from your efforts since your muscles will take longer to repair the tissue damage caused from lifting.
Do you mind posting up exactly what your routine looks like? I would strongly recommend you go with something that you can track on an iPhone, but incorporates nothing but compound movements - have you ever heard of stronglifts 5x5? I’m sure I’ll catch a lot of flack for recommending this program to you, but it would be the best option for you. It’ll have you starting out very easily, but increases in difficulty pretty rapidly.
Also, please don’t be that guy that spends time doing shoulder shrugs and calf raises. You don’t need that shit. You need to drop body fat as fast as humanly possible which means you need to be doing nothing more than: Squatting, Overhead press (standing - this engages the core, don’t do this sitting), deadlift, bench, barbell row. Seriously, those 5 lifts are the only thing you need, combined with cardio, and a proper diet to fast track results.
edit: What I’m trying to say is that without even seeing what you look like, focusing on isolated lifts (bicep curls, hamstring curls, leg extensions, etc…) is not the optimal use of your time. You need to trigger as much muscle growth as possible, which is most efficiently done with compound lifts. And forget running, you don’t need that sht. Get on the stair stepper 4 times a week at level 15 and forget about life for the next 45 minutes. Please calculate your BMR and eat no less than 80% of that (eating too few calories, for too long can seriously damage your hormones).