Realtor.com has monthly and weekly data on the existing home market. Here is their weekly report released today from Chief economist Danielle Hale: Weekly Housing Trends View — Data Week Ending Mar 4, 2023

• Active inventory growth continued to climb with for-sale homes up 61% above one year ago. Inventories of for-sale homes rose again, but the gain was the lowest we’ve seen since December. With new listings lagging behind year-ago pace, the growing number of homes for sale reflects longer time on market rather than an influx of sellers.
…
• New listings–a measure of sellers putting homes up for sale–were again down, this week by 26% from one year ago. For 35 weeks now, fewer homeowners put their homes on the market for sale than at this time one year ago. Until this week, the gap was slightly smaller than we saw in the last quarter of 2022. In February, attitudes toward housing worsened among both potential buyers and potential sellers as mortgage rates began to climb again and respondents reported lower job security. These attitudes could mean ongoing weakness in the number of homeowners deciding to sell.

Here is a graph of the year-over-year change in inventory according to realtor.com. 

Inventory is still up sharply year-over-year; however, the YoY increase has slowed recently.