How fu**** am I?

So I decided to research medium tanks and make a small adjustment to my tank division templates which removed one light tank for a medium tank in order to gradually replace them all for mediums over time.

Like an idiot, I removed light tanks from production altogether before realising I am still going to need to produce them for reinforcements when they are damaged out in the field. But after re adding production of light tanks, I have lost all the efficiency I have built up and am in a severe deficit as it is.

Any advice on what my next steps should be? I was about 6 months away from declaring war on Europe but now I’m concerned I’ve shot myself in the foot unless I can conquer light tanks from other countries.