हल्का रूपना  =  occur
This is a watered down version of the original proposal.

कम कड़क करना
Water down the mixture.

पतला करना
They watered down the moonshine.

कमज़ोर बना देना
Some people say the new regulations water down several laws that protect people who rent apartments in the city. / once the bill is introduced, he's worried that lawmakers will water it down.