Installation of interior window sills

I installed my window sills using height-adjusting wooden shims and plenty of silicone because the foam was too risky for me due to structural conditions.

I later found out that door frame foam doesn't expand and exert pressure nearly as much.
Can anyone confirm this? If that's truly the case, it wouldn't be a bad option for something you might do in the future

For height compensation and load-bearing stability, I also used leveling wedges and directly foamed them in at intervals of about 30-50 cm. One row on the window side, and one row roughly in the first third towards the room side. I used plastic wedges that can interlock to adjust the height.

In my opinion, the two-component foam was exactly the right choice. As Neige already mentioned, it cures very quickly, allowing for fast continuation of work. Additionally, it expands much less than the one-component foam, which ensures good filling of the cavity but does not lift the window sills too much. For this job, I would always prefer the two-component foam over the one-component foam.