Nope! The IRCC will be basing on your last 4-6 month bank statements, itinerary and tickets price to determine how much money you'll be bringing. For example say you have 3000.00 USD in your savings, the tickets cost you 2000.00 USD, and you want to spend 30 days in Canada. In that case, you don't have sufficient funds.
Make sure you have enough funds to pay for the tickets, hotel, food, activities and maybe travel insurance. And you should have money left for when you come back to home country. The invitation letter must state why you're being invited and what they'll be offering you (food, home and maybe transportation.)
As you're taking care of your mom, you should limit the trip to 10 days max.