Yorke believes Welbeck can take heart from United legend Ole Gunnar Solskjaer and Teddy Sheringham.
"It is a long, gruelling season and it is very hard to maintain a consistent scoring standard. Somewhere along the line strikers will have a dip," Yorke told the Manchester Evening News. "At the moment it is all about Robin van Persie and so it should be. But you have to stick in there.
"Danny is working his socks off. I have the privilege at times of going down to the Carrington training centre and I see the work he is putting in.
"He won't be totally happy that he has been playing out of position a fair bit. I am sure he would rather be in the centre.
"But he's young and he's learning his trade. He'll have to be patient because I expect when Robin and Wayne are fit they will be playing.
"But he shouldn't be too downbeat if that happens.
"He only has to look back to how things panned out in the Treble year to take heart."