First time poster long time stalker. 3.5 btc millennial, need advice

My husband bought bitcoin from 2017 through 21, before his untimely death. Four years later I found his paper wallet and transferred into coin base. I about cried. I’m trying to learn more about cryptocurrency now. I own my house, but owe roughly $150k on it, should I pull some out now and sit on one bitcoin? I know it’s going to keep growing but the burden of a mortgage payment that I am able to payoff it’s looking really enticing… suggestions?