It sounds like you are doing the right things eg warmups and finger excercises - something I should do but I can't get myself to do it. It's good to have an organised plan - also something I need to make myself do more - and you are doing a range of practicing too.
Your hand strength will improve as you play for longer, and getting a clean F chord is quite an achievement! Using a metronome is a really good thing to do right from the start because keeping the beat is so essential to how your music sounds to others.
If you find tbat your books are getting boring - I know you don't say this, but just in case - the lessons, information, and support you will get from this site if you hang around here will do wonders for your interest and motivation in all sorts of ways.
Welcome to the forum, and any questions you might have, post away and you will get lots of responses. I don't believe there is
anything that our members don't know about music and they're always willing to share.
One good thing about music is that when it hits you, you feel no pain - Bob Marley