Can you freeze vallium / diazepam milk soloution

just wondering if you can freeze the diazepam milk solution as I am now down to .058mg and when I am down to .5mg was looking to take 2mg table and divide it into four doses and rather than the two doses using a split tablet at present.

My local shop never seems to have milk that lasts more than 3 days so was looking to just freeze it when made up and then just defrost at room temp during the morning and take at lunchtime. Would only be a 50ml solution so would defrost quickly.