Looks like the humidity in the jar is correct. As long as you are not going way past that point in the jar then continue this routine:
Week one: Burp twice a day, morning and evening.
Week 2-3: Burp once daily.
Week 4 - 6 a few days in between to aim for two - three times that week.
I also take my bud out during the first week for about 15 min once a day. This is my evening routine.
The grass smell can come and go, it’s not the end of the world and typically means it needs a bit more time outside the jar to dry. That’s why during the first week I keep it out for a little bit. My RH in my place is roughly 45% so it helps during that first week.
Hope this helps.