I'm half way through level 23, about half way done with the main quest and a ton of side quests completed. It feels like I should be in my 30's. I'm playing as a 2H Warrior with Heavy Armor. The skilsl I've been leveligng are 2H, Heavy Armor, and sometimes Blacksmithing.

Anything I can do to level faster or am I fine for where I'm at?

Skills take more time to level the higher they are. 15 to 16 will be faster than 60 to 61.

Use a skill that is low.

You will level faster I bet if you do some crafting every so often. Just collect stuff as you go and craft it when you see crafting stations. A fun diversion and it helps you too

The less skills you use the slower you level and you make use of very few.

I like leveling slowly because there's a huge world to explore and so many quests. I don't want to max anything out too quickly. I'm still finding things challenging at Level 39 with my favorite skills mostly in the 60s. It feels right.

If you are enjoying the challenge and are happy with the variety of skills you have then you are in a fine spot. If you find things are becoming to easy or a bit mundane you probably are going to fast, and if you are finding things are becoming to difficult then you might want to up some lower level less used skills (maybe some one hand) to get a level or two. I level according to my experiences in the game.