Yes I think you would be better served by seeing an ophthalmologist yearly. A baseline is : IOP, complete exam with assignment of cup/disk ration, corneal thickness, gonioscapy, visual field and nerve fiber layer OCT.
I also recommend going to an ophtalmologist ideally one that lists glaucoma maintenance as a speciality. Thats what I have done since an optometrist diagnosed my glaucoma in my right eye about 4 years ago.
The glaucoma specialist I've been going to for nearly 4 years, has me come in three times annually to spread out the three procedures plus IOP checks each time (every 4 months): comprehensive eye exam, visual field test, and OCT. With the eyedrops prescribed and these tests, my glaucoma has been stable and not gotten worse since diagnosed.
10 years ago with my old ophtalmologist, he had been monitoring the higher than normal IOP in my right eye back then (about 24) and had just started doing visual field tests and OCT but there was no optic nerve damage then. Unfortunately he retired a year after that and I delayed finding a new eye doctor for a couple years more and by then apparently some optic nerve damage had occured.
So it sounds like you are at the point I was about 10 years ago, with only higher than normal IOP - so I'd recommend getting the regular glaucoma tests regularly now and perhaps starting a IOP lowering eyedrop early before optic nerve damage starts. My eye doctor a year ago started me on that for my left eye as well now, though it has no optic nerve damage, but had started to consistently get over 23 IOP (previously 18 or so) about 2 years ago.