No, this is off the return of serve on my partner's 2nd serves. I can tell my partner to put more 1st serves in but that doesn't seem fair. My opponents are ripping big time forehands right at my body off my partner's 2nd serves and i am finding it hard to handle.
Actually, it is fair to ask your partner to try to take a little off their first serve so they get more of them in, or to try to serve that second serve the opponent's backhand, as long as you realize that they might not be able to manage that.
However, assuming that he's still going to feed some second serves to this guy's forehand you also have to adjust. Don't blame your opponent for making a winning play - as you said, when you let the shots go, they are going in so they aren't just head-hunting.
You are going to have adjust your positioning on your partner's second serve against the guys who are punishing it. You need to move back.
How far back you move is up to you. If you move back to the service line or a foot behind it, you get that extra split second to react, and that may be all the time you need to get a good volley. You also change their aiming cues - if they are head-hunting, they are going to start missing long because they have to aim higher. They might start missing into the net if they try to put a dipper at your feet.
You could move back into no man's land, but that's probably a bad idea. A better option would be to start the point on the baseline. Once again you've changed their aiming cues, and you now have the option of crunching back their return with a ground stroke, of hitting a topspin lob.
Both options open up the crosscourt return, but it really doesn't sound like your partner's second serve is forcing weak returns, so there's no great loss.
Another option is to try Australian or I formations. The goal here to is make them think about their returns, instead of just locking in an crushing them. Also, you change their aiming reference.
Finally, you can poach crosscourt on his second serve, hoping your movement will distract them. I'm not talking about a deliberate hinderance here, but moving to cover the cross court while your partner covers the down-the-line shot. If the returner is tracking you, he'll have to make a split second decision to change his stroke to go crosscourt, or stick the down-the-line shot. That indecision could be all that's needed to induce an error.
Options 1 and 2 put the least strain on your partner. Options 3 and 4 require a partner who can credibly move to cover the down-the-line return and do something with it.
I suggest mixing it up to see what works. You're not required to present your opponents with the same scenario every time, and if they can't handle the change ups, it'll be their loss.
Of course, all if these tactics might be for naught if your partner's second serve is just that weak. But trying to change things up seems preferable to being a human target.