As hydrogen is converted to helium, the core becomes denser and hotter, and the Sun gets brighter. The luminosity of the Sun has increased some 30% or so since it became a main sequence star. Sometime a billion or so years from now the Sun’s output will be enough to vaporize the Earth’s oceans. Then it will be a true sister of Venus. We’ll have to move.
For the core to be come denser and for the core to hold 95% of the mass of the solar system.
You need to understand condensates and their Transients.
Compaction every Transients has the same electromagnetic properties.
Normal matter 10*5
Neutron matter 10*17
Quark matter and its composites up to about 10*25 compaction possible transient forming vector fields that mimmic Black Hole Properties.
Partonic(Preon) matter towards 10*30 something
Axion Gluon Matter 10*35 compaction limited by the finest mass.
Even so compaction reaches 10*35 it does not form a Singularity, because the compaction from Normal Matter to Axion Matter has a property Chiral Supersymmetry that creates a Dipolar Electromagnetic Vector Fields as in Vortices.
Think about it for a second, why should this process give long jeopardy to our Sun.