Everyday armday?

Please do compound lifts, bench press, deadlift, squats, rows. It will help a lot instead of these isolation movement.

Dude, side lateral raise & tricep extension are ISOLATION exercise, meaning one group of muscles does majority of the work. That also means that you would hardly be able to progress in terms of poundage. I have been using the same 5kg DB for my side lateral raise like since forever, gotta use momentum when I use 7.5kg, so what's the point.

You can always progress by another way: shorter rest, better form, longer TUT by lengthening the eccentric movement, hold at the top etc...

You don't need to increase the poundage for isolation exercise unless you have exhausted all means for progress, there is definitely no need to ego lift since you train at home, too.

You are welcome.

By the way, this is a reply to your reply to another advice:
Whatever you are using in your workout, be it barbell, dumbbell, pails of water, rocks, your body won't know, all that it knows and cares about is tension. Matter of fact, I find dumbbell more challenging as you need to balance them using both hands instead of letting one side taking the ride, leading to muscle imbalances. Chances are you cannot perform an exercise using DB on the same weight you did using barbell. I know I can't, that's for sure.