Yes, I do understand that it is all totally overwhelming when you first start out. And I do wish people wouldn't do that! But everyone is so eager to help and add their bit of knowledge/experience.
Personally, I like a slow approach - one step at a time. And, for me, the first step is always getting a print-out of your labs, and getting to understand them.
However, I understand that you are not yet ready for that - and, with a bit of luck, you won't need to. Hopefully, you will be perfectly fine on levo and regain your health.
But, you have to understand that people on forums like this are the odd ones out. Millions of people do do very well on levo only, and go back to living normal lives. We are the ones that don't. The odd ones out. We are the ones that can't get diagnosed, can't absorb the treatments, can't convert, can't tolerate T4, etc. etc. etc. We are the complicated cases that doctors can't cope with because they don't have the in-depth training to do so. Therefore, when someone new arrives, everyone assumes that the newbie is in the same boat, and rushes in to help - quite forgetting how overwhelmed they were when they first started out. It's kindly meant, but not always helpful, I know.
Try looking at it this way : your doctor is only one man, with only one brain. Who knows how much that brain has absorbed from his experience and his training? And how much he has forgotten? Do you remember everything that you learnt at school? I don't, I'm sure! So, it's possible he might forget some things, and there maybe things he never learnt.
We, on the other hand, are many beings! Over fifty thousand brains, all with different experiences, and bits of knowledge we've picked up over the years. From our joint experience, we can look at blood tests and instantly see things that your doctor might have missed. And, if we make a mistake in something we suggest, there is always someone behind to say, no, that's not correct. Collective knowledge and experience always has to be better than that of just one man, even if we didn't go to med school. I think it was Dr Peatfield that said : the only expert in any disease is the patient. And some other worthy doctor said to doctors : listen to your patient, and he will tell you what is wrong. But, collective doctors have forgotten how to listen, I'm afraid.
So, take it easy, do it your way - which is your doctor's way - but if things don't work out, you can always come back here, and maybe we can help you sort it out.