The fat in those pellets is too high, I can’t see the ingredients so I don’t know if there are any dangerous ingredients in it but I would switch because the levels are not good. Oxbow, small pet select, and Sherwood have good pellets. I feed my bunnies twice a day, Pellets in the morning and veggie at night, I have been playing around with this to see which they like best. It is fine to give them the same veggies every time but they do like variety. I use Paper bedding ( Crittercare from Walmart). Lots of people use Tractor supply pine pellet stall bedding which is great, I would use it if there was a store near me. Pine wood litter is not okay. You could also order bedding on amazon instead of pet stores. Changing their litter box depends on the litter you use, the size of the litter box, and how often your rabbit goes. Most people change the litter box every 2 days, a week is too long. I do not know if you are lacking anything because there is not enough information for me to tell. What is the age and weight of your bunny? Is he/she spayed/neutered  (depending on age). What is the size of the cage? How many pellets and veggies do you give daily? Also a pic or if you know the breed would help tell if he/she is at a good weight.

There are many pellet brands which can meet the nutritional needs required for rabbits. Once met, then it’s more on owner and rabbit preference on the arrangement of the ingredients and such. You can see here for suggested break-downs of nutritional content: https://wabbitwiki.com/wiki/Pellets#How_can_I_tell_if_a_pellet_is_sufficiently_nutritious.3F

Pine pellet litters (pictured below) are typically kiln-dried, meaning they are actually safe. You just need to confirm that there’s nothing added to them. The most used brand is probably Tractor Supply Co.’s Horse Stall Pellets.

You can look at our RABBIT INFO section for information on housing, diet, and general care: https://binkybunny.com/house-rabbit-information/

For a bunny on a good pellet and healthy brand normally have 1/4 cup per 6 lbs but it varies. Some don’t even eat pellets. If they are at a good weight I won’t worry about changing the amount you give them. I don’t know where you are so I don’t know how high the risk for RHV2 is, but in case you didn’t know RHV2 is a deadly rabbit virus spreading like wildfire. Having them outside right now isn’t the best idea.

The OP said they are in Malaysia. I don’t know if has been detected there or if there is a wild rabbit/hare population there that can spread the disease. There was a documented case in Singapore though earlier this year.

Recommendations for pellet nutrition analysis vary. This pellet looks to be decent. The fiber is high (which is most important). Wick provided a good link that shows different recommendations.

For litter, pine shavings are not good. Pine pellet litter is fine. Paper pellet litter is fine as well.

Also, sometimes you can find the exact same item….litter, cleaning products, etc.,… cheaper if marketed for cats, rather than small animals.

Why…???  No idea.

I use the crumbled paper litter, same brand, same product and about $4 cheaper to buy the cat version…same with cage/litter box box wipes.