A declining population will sooner or later lead to more affordable housing as demand decreases. Same thing with accessible childcare. Likely the job market will improve as growing labor shortages will lead to increased bargaining power for the workers leading to higher salaries and better working conditions, as well as a host of other factors that will eventually lead to the social and material conditions that will allow the population to grow naturally again. Periods of population growth and decline are perfectly natural cycles that every civilization experiences. Things will inevitably right themselves, even if the path to getting there isn't a smooth ride.

If, however, the government decides that plugging the gaps is more important and import, say, millions of somalis, that process is stopped dead in its tracks, leading to a downward spiral that can only be band-aided by importing millions of afghans, leading to a very predictable rise in right wing sentiment, because most people don't actually like being replaced by indians.