Phase out postdoc position
I'm not familiar with finding mechanisms outside the USA, so I apologize for my ignorance. Are any of the grants transferrable? At least in the US, some of them are so if you switch institutions, that money goes with you. I would imagine most places would be happy to accept someone bringing them funding. If they are, try applying for positions at other institutions and make sure to mention that you already have funding and are bringing that funding to them.