Yes, you can use the 'Forgot your Password' tool to help you
Good to know! Another question related to MyDMV. And if there is a change of residence, how long do I have to report it?
You must report a change of residence address on your license, permit, non-driver ID, or vehicle registration to the DMV within 10 days.
I have another question about my  DMV account.  Is it possible to sign in with my NY.gov username only?