My ds was 18 months, ds2 wants to walk now at 9 months!!!
Dont worry or listen to anyone, as long as they are showing intrest in standing by 18 months and they can stand with ease holding onto something then thats normal…… my ds did this then walked without a wobble or a fall, I know kids who walk younger than run and have no control and fall all over the place.
Dont worry he will do it all in his own time…. put things a little out of his comfort zone and he might just forget about it and just go for it
Good luck and dont worry