YES!!!!
3 week would be fine 4 would be perfect, since 10 weeks of deca are very suppressive on the HPTA.
Start it 4 weeks later your last shot of Deca, i alwais find better to run it after 4 weeks an not tree due to the very long acting ester of Deca but that's my 0.2, 3 week are a minimum to wait.
Bye
Body