First try these exercises as warmup

https://www.huntington-music.com/blog/hand-exercises

Download stage metronome app, and practice at 60bpm. When comfortable, slowly increase tempo by 5, until you reach 90bpm

Try below exercises with right hand only, then left hand only and then with both hands.

RH - Right hand

LH - Left hand

1. C to G

Ascending

Notes: C D E F G

Finger numbers RH: 1 2 3 4 5

Finger numbers LH: 5 4 3 2 1

Descending

Notes: G F E D C

Finger numbers RH: 5 4 3 2 1

Finger numbers LH: 1 2 3 4 5

2. Alternate from C to G

Ascending

Notes: C E D F E G

Finger numbers RH: 1 3 2 4 3 5

Finger numbers LH: 5 3 4 2 3 1

Descending

Notes: G E F D E C

Finger numbers RH: 5 3 4 2 3 1

Finger numbers LH: 1 3 2 4 3 5

3. Direct from C to G

Ascending

Notes: C G C D E F G

Finger numbers RH: 1 5 1 2 3 4 5

Finger numbers LH: 5 1 5 4 3 2 1

Descending

Notes: G C G F E D C

Finger numbers RH: 5 1 5 4 3 2 1

Finger numbers LH: 1 5 1 2 3 4 5