First I want to start off by saying that I'm 45 years old,soon to be 46!

This is my current fitness routine:

Monday,Wednesday& Friday: 30 minute weight lifting (compound lifts)+ 20 minute HIIT

Tuesday,Thursday& Saturday: 30-45 minute steady state cardio

Plus,I walk my dog fro 30-40 minutes 1-2x a day.

As,you can see I am very active. Please forgive me if this is repetitive...but is this too much?

I'd appreciate any input.

My goal is to gain strength...Thanks in advance!