35 and old????? Wait 10 years and get back to us old guys lol. 3 day split is good. I’ve been doing PPL 3 days for years with great results for not competing. 1. Chest, shoulders, tris. 2. Back, bis, calfs (or calf’s on leg day). 2. Quads, glutes, hams. Just make sure you are working to failure with good clean form. Slow, controlled eccentric movements on all lifts, good diet, and rest is all you need. If you need cardio then just go for a walk or a bike ride when you have time at home.
Don’t get caught up in doing more. If you do the right amount of stimulus with enough food and rest you WILL grow.