If it took you a month to fall out of the habit, give yourself more than a weekend to climb back in.

Falling out of a habit happens slowly, and climbing back in does too. A month of missed days is a month of lost ground, and expecting to pick up where you left off after one determined weekend sets you up to quit twice. The impatience is the risk, not the gap. Rebuilding is ordinary work, and it does go quicker the second time.

Give yourself a timeline roughly as long as the slide took. Start below your old level on purpose so the first week is winnable. Judge yourself on days done rather than on distance still to cover.