Yes. It is licit (i.e., “legal”) for the Bishop to declare that only His Body be offered.
Either species (Body or Blood) is complete in and of Itself.
This means that you can receive ONLY His Blood… or ONLY His Body. It’s only for the last couple of decades that we’ve been given our choice if both are provided at any given Mass.
We never had receiving His Body in our hands until after the Second Vatican Council. It freaked me out a bit. I was so afraid of dropping Him!
Think of it this way. You put one flat palm under the other flat palm. This forms a “table” from which we are called to actively reach out for Him… instead of opening our mouth as a baby receiving food from a spoon. That’s the psychological difference. Though… either way… we are passive to receive. We are NOT reaching out to take the Host from the priest or EMHC.
It doesn’t matter at all which hand is on top. If you’re right handed, put your flat left palm on top of your flat right palm.
This causes the Host to be put onto your flat left palm.
At which point, you use your right hand to pick up the Host and put it into your mouth.
If you’re still nervous about it, just approach with your mouth open… offering your tongue as the table… instead of your open palm.
Nothing bad is going to happen to you if you continue to receive Him on your tongue.
By the way… you can think of it this way. Remember how St. Thomas was so nervous to put his own hand INTO our Lord’s side where the wound from the spear was? Jesus gently and definitely encouraged St. Thomas to reach his hand into our Lord’s side.
Same thing with accepting His Body in our open palm… instead of in our open mouth.