This is the correct approach. As @romavillan pointed out, Belotti has improved since the restart, and he's in the worse team, but Abraham looks the much safer bet to succeed here. I like Belotti, but I do think some here are overestimating how good he is. He's a real threat in the air, but his scoring touch comes and goes. Tammy isn't perfect, but he gets chances more consistently and is better in the box than Belotti is. That said, Belotti is better moving with the ball at his feet than Tammy is.
I think, considering what we've already seen with Tammy in our system, he's a much safer proposition than Belotti.