Small is a relative term. Mine was 2.1 cm but in an area that’s pressing on the optic nerve and the pituitary gland depending on where yours is perhaps it won’t need anything done. I had mine removed three weeks ago through an intranasal/sinus approach. I read quite a bit about mine and was told a lot of information by MDs. Apparently, a great majority of meningiomas are only found in people on autopsy and never impact them throughout their life. I will pray this is the case for you. I understand being scared of losing sleep over it. Anytime you’re told you have a brain tumor. It’s quite impactful and scary. Thankfully, it turned out to be a benign tumor