A reasonably ` common` tale/ experience......99% of us wearers have/ had a similar situation.
Takes a while to, firstly, accept the fact of thinning/balding,then investigating ways to slow/stop it......concealers work well for a while, but the inevitable onward- march of balding, will eventually defeat concealers........ and secondly, to decide on the plan-of-action.
If I was you, I`d decide to wear sooner, rather than later......that way, you won`t have the problem of people who know you suddenly noticing something ` different` about you and the inevitable awkward ` questions` . If you accept you`re going to have to wear in 12-18 month`s time, you might as well ` head it off at the pass` and just do it now. Cheers.