Question: Do you have hyperplasia tissue on your child's gums?

The photo is of my son's mouth.
I'm not sure if it's clearly visible, but there is a bump on the innermost part of your gums.
I discovered this when the baby was about 100 days old.
Upon closer inspection, I noticed that the flesh attached like a lump, similar to gums.
I was so surprised, I don't even know how to describe it, whether it's gum disease or some other unknown illness.

Now, the child is grown up and has molars, so it looks smaller.

Since it was at 100 days, it was a baby and had no teeth, so it looked bigger.
When I discovered it as a baby and went to the pediatrician, they said they didn't know much and suggested I visit a dentist.
Should I ask at the dentist's office if my gums are underdeveloped?
You can just think of it as a cyst or consider it as a pseudotumor.
It's not something serious like an illness or a problem.
They said that the child would just feel uncomfortable as they grow up.
Since he is a baby, I was told that he can't do anything and just has to be watched.

And you get a dental check-up every six months.
I moved between several dental clinics as I grew up.
I ask the doctor every time I receive dental treatment.
All the teachers said there is no need to worry, only that it is inconvenient.
If it's not uncomfortable, you can just leave it alone.
If it's uncomfortable, they say that when the child grows a bit, they can undergo removal surgery.

So, I'm just watching and waiting.
I'm not sure exactly what the medical condition is called.
Of course, they said it's okay to leave it as it is in the hospital, but
From a mother's perspective, it's also understandable to feel anxious.
Do you have a child with these symptoms?
Or among you, is there anyone who has something like this?
The child occasionally says they feel uncomfortable.
Is it correct to perform the removal surgery with that?

I'm also 고민ing whether it's right to just tell them to endure.