Even with this recent string of losses the Celtics are on a 59-23 pace, which would be the second-best record of the Tatum/Brown era. That's despite some injuries with Holiday, Horford, Hauser and Kornet all missing 6-7 games each and KP missing 21.
So time to Panic? No.
In the Nuggets title run in 2023 they had a 2-4 stretch, 0-3 stretch and 0-4 stretch.
In the Warriors title run in 2022 they had a 3-7 stretch, a 2-9 stretch and a 1-7 stretch.
In the Bucks title run in 2021 they had an 0-5 stretch and a 3-6 stretch.
In the Raptors title run in 2020 they had a 1-4 stretch, a 4-6 stretch and a 2-4 stretch
The Celtics by comparison are 2-4 in their last six. Even championship level teams will typically go through a couple of rough stretches a year. Celtics are in one right now, but they'll be fine.