welcome to healthcare magic forum
thank you for your query
you have bruise
formation under nail .
toe nail take much longer time to grow .
it may take up to 11-12 months also .
you need not to do any thing as it will go its own only .
please do not lift the nail or scratch as it will delay the healing.
if dryness is there you can apply moisturizer cream over nail .
wearing cotton socks will help you.
i hope i answered your question