Hi,
We were in the same boat like you. However I have applied for my study permit, my husbands OWP and our 1 year old son's TRV together. I have got my visa approved but my husband and son are still waiting. We have applied through online with pre medicals on 17th August and received my PPT request on 23.
I would suggest you to make a strong SOP, show more than enough funds and good ties to home country.
Good luck with your visa application.