Parrot proofing is removing or covering the things that the bird could hurt itself with, such things as electrical cords, open containers of liquids no matter the size. Birds have drowned in cups and glasses that are half full of water. Toilet bowls are another drowning spot. Many house plants are toxic to birds. Watch for places that a small bird could hide in or under and get stuck in. Pillows on sofas can be a danger as you have to look before sitting on them as your bird may have hidden under them. Never let your bird in the kitchen area if it is being used or has pots, pans or otter dishes with hot liquids in them. Teflon or other non stich surface may kill your bird in minutes so do use them.
Here is a link that can help you with things that are toxic or safe for your bird, the list begins on the second page
viewtopic.php?f=8&t=12521 This list has foods, household plants, woods, trees, household products all in their own sections and listed as toxic or non toxic, it has been a major help for me.
IRNs are rather needy birds in that they do require a rather large commitment of time to remain tame. I don't know how long you have actually had your bird but the first stages of your relationship need to be spent in reassuring your bird as it is terrified when it is rehomed. It has lost all that is familiar to it and it is all alone without the security provided by its flock in a totally alien environment which for such a bird is a death sentence from their perspective. Spend lots of time every day talking, praising your bird, singing to it without reaching in it's cage other than for changing the food and water and cleaning, and without asking it to do anything. Watch for your bird to start relaxing in your presence and then start offering the bird treats through the cage bars and continue doing these things until the bird is accepting the treats in a calm manner. At this point the bird should be looking forward to the time that you spend with it and be coming to the same side of the cage as you are on before you even get there. Now you cam place yourself in the doorway of the cage and open the door. Repeat the talking, praising and singing with the bird and offer the treats directly from your fingers in the doorway of the cage. Do not reach inside the cage, let your bird come to you. When the bird is comfortable with calmly accepting treats from you in this manner then start holding the treat so that the bird needs to step onto your hand to get the treat. When is does this say the cue " Step Up" or whatever cue you wish to use for this.
At this time you can begin clicker and target training in the cage. Here is the link to help you with this
viewtopic.php?f=11&t=227 Now your bird is going to need time out of the cage to exercise and to explore its new home so I suggest that you do this in the late afternoon, probably beginning about 2 hours before the birds dinner time and dusk. This way you can show the bird when you place its dinner in its cage and it should go back in on its own before dark. It helps if your inside lights are turned off while you do this as it helps the bird to know when to return to its cage. If it does not then if you wait for it to roost like it is going to go to sleep it is a really simple matter to scoop it up and place it in the cage.
This should get you started off in the right direction with your new friend.