Is it even possible to remember things when you were only a few months old?
with hypnotherapy or something
Well if you have a good memory in general , like photographic memory (or you just have a good memory like that) then yes. I don't have a photographic memory but I can remember a few things as a toddler.
I don't believe you can remember things that happened when you were a few months old. Your brain wasn't much developed then, which means you cannot possibly remember things that happened then.
I'm pretty sure that you only start getting to remember things when you are two years old. Just want to add a random fact: did you know that over a third of your childhood memory are dreams.